granicus.if.org Git - imagemagick/blob - MagickCore/image.c

   1 /*
   2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   3 %                                                                             %
   4 %                                                                             %
   5 %                                                                             %
   6 %                     IIIII  M   M   AAA    GGGG  EEEEE                       %
   7 %                       I    MM MM  A   A  G      E                           %
   8 %                       I    M M M  AAAAA  G  GG  EEE                         %
   9 %                       I    M   M  A   A  G   G  E                           %
  10 %                     IIIII  M   M  A   A   GGGG  EEEEE                       %
  11 %                                                                             %
  12 %                                                                             %
  13 %                           MagickCore Image Methods                          %
  14 %                                                                             %
  15 %                              Software Design                                %
  16 %                                   Cristy                                    %
  17 %                                 July 1992                                   %
  18 %                                                                             %
  19 %                                                                             %
  20 %  Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization      %
  21 %  dedicated to making software imaging solutions freely available.           %
  22 %                                                                             %
  23 %  You may not use this file except in compliance with the License.  You may  %
  24 %  obtain a copy of the License at                                            %
  25 %                                                                             %
  26 %    http://www.imagemagick.org/script/license.php                            %
  27 %                                                                             %
  28 %  Unless required by applicable law or agreed to in writing, software        %
  29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
  30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
  31 %  See the License for the specific language governing permissions and        %
  32 %  limitations under the License.                                             %
  33 %                                                                             %
  34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  35 %
  36 %
  37 %
  38 */
  39 \f
  40 /*
  41   Include declarations.
  42 */
  43 #include "MagickCore/studio.h"
  44 #include "MagickCore/animate.h"
  45 #include "MagickCore/artifact.h"
  46 #include "MagickCore/attribute.h"
  47 #include "MagickCore/blob.h"
  48 #include "MagickCore/blob-private.h"
  49 #include "MagickCore/cache.h"
  50 #include "MagickCore/cache-private.h"
  51 #include "MagickCore/cache-view.h"
  52 #include "MagickCore/channel.h"
  53 #include "MagickCore/client.h"
  54 #include "MagickCore/color.h"
  55 #include "MagickCore/color-private.h"
  56 #include "MagickCore/colormap.h"
  57 #include "MagickCore/colorspace.h"
  58 #include "MagickCore/colorspace-private.h"
  59 #include "MagickCore/composite.h"
  60 #include "MagickCore/composite-private.h"
  61 #include "MagickCore/compress.h"
  62 #include "MagickCore/constitute.h"
  63 #include "MagickCore/delegate.h"
  64 #include "MagickCore/display.h"
  65 #include "MagickCore/draw.h"
  66 #include "MagickCore/enhance.h"
  67 #include "MagickCore/exception.h"
  68 #include "MagickCore/exception-private.h"
  69 #include "MagickCore/gem.h"
  70 #include "MagickCore/geometry.h"
  71 #include "MagickCore/histogram.h"
  72 #include "MagickCore/image-private.h"
  73 #include "MagickCore/list.h"
  74 #include "MagickCore/magic.h"
  75 #include "MagickCore/magick.h"
  76 #include "MagickCore/magick-private.h"
  77 #include "MagickCore/memory_.h"
  78 #include "MagickCore/module.h"
  79 #include "MagickCore/monitor.h"
  80 #include "MagickCore/monitor-private.h"
  81 #include "MagickCore/option.h"
  82 #include "MagickCore/paint.h"
  83 #include "MagickCore/pixel-accessor.h"
  84 #include "MagickCore/profile.h"
  85 #include "MagickCore/property.h"
  86 #include "MagickCore/quantize.h"
  87 #include "MagickCore/random_.h"
  88 #include "MagickCore/resource_.h"
  89 #include "MagickCore/segment.h"
  90 #include "MagickCore/semaphore.h"
  91 #include "MagickCore/signature-private.h"
  92 #include "MagickCore/statistic.h"
  93 #include "MagickCore/string_.h"
  94 #include "MagickCore/string-private.h"
  95 #include "MagickCore/thread-private.h"
  96 #include "MagickCore/threshold.h"
  97 #include "MagickCore/timer.h"
  98 #include "MagickCore/token.h"
  99 #include "MagickCore/utility.h"
 100 #include "MagickCore/utility-private.h"
 101 #include "MagickCore/version.h"
 102 #include "MagickCore/xwindow-private.h"
 103 \f
 104 /*
 105   Constant declaration.
 106 */
 107 const char
 108   AlphaColor[] = "#bdbdbd",  /* gray */
 109   BackgroundColor[] = "#ffffff",  /* white */
 110   BorderColor[] = "#dfdfdf",  /* gray */
 111   DefaultTileFrame[] = "15x15+3+3",
 112   DefaultTileGeometry[] = "120x120+4+3>",
 113   DefaultTileLabel[] = "%f\n%G\n%b",
 114   ForegroundColor[] = "#000",  /* black */
 115   LoadImageTag[] = "Load/Image",
 116   LoadImagesTag[] = "Load/Images",
 117   PSDensityGeometry[] = "72.0x72.0",
 118   PSPageGeometry[] = "612x792",
 119   SaveImageTag[] = "Save/Image",
 120   SaveImagesTag[] = "Save/Images",
 121   TransparentColor[] = "#00000000";  /* transparent black */
 122
 123 const double
 124   DefaultResolution = 72.0;
 125 \f
 126 /*
 127 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 128 %                                                                             %
 129 %                                                                             %
 130 %                                                                             %
 131 %   A c q u i r e I m a g e                                                   %
 132 %                                                                             %
 133 %                                                                             %
 134 %                                                                             %
 135 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 136 %
 137 %  AcquireImage() returns a pointer to an image structure initialized to
 138 %  default values.
 139 %
 140 %  The format of the AcquireImage method is:
 141 %
 142 %      Image *AcquireImage(const ImageInfo *image_info,ExceptionInfo *exception)
 143 %
 144 %  A description of each parameter follows:
 145 %
 146 %    o image_info: Many of the image default values are set from this
 147 %      structure.  For example, filename, compression, depth, background color,
 148 %      and others.
 149 %
 150 %    o exception: return any errors or warnings in this structure.
 151 %
 152 */
 153 MagickExport Image *AcquireImage(const ImageInfo *image_info,
 154   ExceptionInfo *exception)
 155 {
 156   const char
 157     *option;
 158
 159   Image
 160     *image;
 161
 162   MagickStatusType
 163     flags;
 164
 165   /*
 166     Allocate image structure.
 167   */
 168   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
 169   image=(Image *) AcquireMagickMemory(sizeof(*image));
 170   if (image == (Image *) NULL)
 171     ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 172   (void) ResetMagickMemory(image,0,sizeof(*image));
 173   /*
 174     Initialize Image structure.
 175   */
 176   (void) CopyMagickString(image->magick,"MIFF",MagickPathExtent);
 177   image->storage_class=DirectClass;
 178   image->depth=MAGICKCORE_QUANTUM_DEPTH;
 179   image->colorspace=sRGBColorspace;
 180   image->rendering_intent=PerceptualIntent;
 181   image->gamma=1.000f/2.200f;
 182   image->chromaticity.red_primary.x=0.6400f;
 183   image->chromaticity.red_primary.y=0.3300f;
 184   image->chromaticity.red_primary.z=0.0300f;
 185   image->chromaticity.green_primary.x=0.3000f;
 186   image->chromaticity.green_primary.y=0.6000f;
 187   image->chromaticity.green_primary.z=0.1000f;
 188   image->chromaticity.blue_primary.x=0.1500f;
 189   image->chromaticity.blue_primary.y=0.0600f;
 190   image->chromaticity.blue_primary.z=0.7900f;
 191   image->chromaticity.white_point.x=0.3127f;
 192   image->chromaticity.white_point.y=0.3290f;
 193   image->chromaticity.white_point.z=0.3583f;
 194   image->interlace=NoInterlace;
 195   image->ticks_per_second=UndefinedTicksPerSecond;
 196   image->compose=OverCompositeOp;
 197   (void) QueryColorCompliance(AlphaColor,AllCompliance,&image->alpha_color,
 198     exception);
 199   (void) QueryColorCompliance(BackgroundColor,AllCompliance,
 200     &image->background_color,exception);
 201   (void) QueryColorCompliance(BorderColor,AllCompliance,&image->border_color,
 202     exception);
 203   (void) QueryColorCompliance(TransparentColor,AllCompliance,
 204     &image->transparent_color,exception);
 205   GetTimerInfo(&image->timer);
 206   image->cache=AcquirePixelCache(0);
 207   image->channel_mask=DefaultChannels;
 208   image->channel_map=AcquirePixelChannelMap();
 209   image->blob=CloneBlobInfo((BlobInfo *) NULL);
 210   image->timestamp=time((time_t *) NULL);
 211   image->debug=IsEventLogging();
 212   image->reference_count=1;
 213   image->semaphore=AcquireSemaphoreInfo();
 214   image->signature=MagickCoreSignature;
 215   if (image_info == (ImageInfo *) NULL)
 216     return(image);
 217   /*
 218     Transfer image info.
 219   */
 220   SetBlobExempt(image,image_info->file != (FILE *) NULL ? MagickTrue :
 221     MagickFalse);
 222   (void) CopyMagickString(image->filename,image_info->filename,
 223     MagickPathExtent);
 224   (void) CopyMagickString(image->magick_filename,image_info->filename,
 225     MagickPathExtent);
 226   (void) CopyMagickString(image->magick,image_info->magick,MagickPathExtent);
 227   if (image_info->size != (char *) NULL)
 228     {
 229       (void) ParseAbsoluteGeometry(image_info->size,&image->extract_info);
 230       image->columns=image->extract_info.width;
 231       image->rows=image->extract_info.height;
 232       image->offset=image->extract_info.x;
 233       image->extract_info.x=0;
 234       image->extract_info.y=0;
 235     }
 236   if (image_info->extract != (char *) NULL)
 237     {
 238       RectangleInfo
 239         geometry;
 240
 241       flags=ParseAbsoluteGeometry(image_info->extract,&geometry);
 242       if (((flags & XValue) != 0) || ((flags & YValue) != 0))
 243         {
 244           image->extract_info=geometry;
 245           Swap(image->columns,image->extract_info.width);
 246           Swap(image->rows,image->extract_info.height);
 247         }
 248     }
 249   image->compression=image_info->compression;
 250   image->quality=image_info->quality;
 251   image->endian=image_info->endian;
 252   image->interlace=image_info->interlace;
 253   image->units=image_info->units;
 254   if (image_info->density != (char *) NULL)
 255     {
 256       GeometryInfo
 257         geometry_info;
 258
 259       flags=ParseGeometry(image_info->density,&geometry_info);
 260       image->resolution.x=geometry_info.rho;
 261       image->resolution.y=geometry_info.sigma;
 262       if ((flags & SigmaValue) == 0)
 263         image->resolution.y=image->resolution.x;
 264     }
 265   if (image_info->page != (char *) NULL)
 266     {
 267       char
 268         *geometry;
 269
 270       image->page=image->extract_info;
 271       geometry=GetPageGeometry(image_info->page);
 272       (void) ParseAbsoluteGeometry(geometry,&image->page);
 273       geometry=DestroyString(geometry);
 274     }
 275   if (image_info->depth != 0)
 276     image->depth=image_info->depth;
 277   image->dither=image_info->dither;
 278   image->alpha_color=image_info->alpha_color;
 279   image->background_color=image_info->background_color;
 280   image->border_color=image_info->border_color;
 281   image->transparent_color=image_info->transparent_color;
 282   image->ping=image_info->ping;
 283   image->progress_monitor=image_info->progress_monitor;
 284   image->client_data=image_info->client_data;
 285   if (image_info->cache != (void *) NULL)
 286     ClonePixelCacheMethods(image->cache,image_info->cache);
 287   /*
 288     Set all global options that map to per-image settings.
 289   */
 290   (void) SyncImageSettings(image_info,image,exception);
 291   /*
 292     Global options that are only set for new images.
 293   */
 294   option=GetImageOption(image_info,"delay");
 295   if (option != (const char *) NULL)
 296     {
 297       GeometryInfo
 298         geometry_info;
 299
 300       flags=ParseGeometry(option,&geometry_info);
 301       if ((flags & GreaterValue) != 0)
 302         {
 303           if (image->delay > (size_t) floor(geometry_info.rho+0.5))
 304             image->delay=(size_t) floor(geometry_info.rho+0.5);
 305         }
 306       else
 307         if ((flags & LessValue) != 0)
 308           {
 309             if (image->delay < (size_t) floor(geometry_info.rho+0.5))
 310               image->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 311           }
 312         else
 313           image->delay=(size_t) floor(geometry_info.rho+0.5);
 314       if ((flags & SigmaValue) != 0)
 315         image->ticks_per_second=(ssize_t) floor(geometry_info.sigma+0.5);
 316     }
 317   option=GetImageOption(image_info,"dispose");
 318   if (option != (const char *) NULL)
 319     image->dispose=(DisposeType) ParseCommandOption(MagickDisposeOptions,
 320       MagickFalse,option);
 321   return(image);
 322 }
 323 \f
 324 /*
 325 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 326 %                                                                             %
 327 %                                                                             %
 328 %                                                                             %
 329 %   A c q u i r e I m a g e I n f o                                           %
 330 %                                                                             %
 331 %                                                                             %
 332 %                                                                             %
 333 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 334 %
 335 %  AcquireImageInfo() allocates the ImageInfo structure.
 336 %
 337 %  The format of the AcquireImageInfo method is:
 338 %
 339 %      ImageInfo *AcquireImageInfo(void)
 340 %
 341 */
 342 MagickExport ImageInfo *AcquireImageInfo(void)
 343 {
 344   ImageInfo
 345     *image_info;
 346
 347   image_info=(ImageInfo *) AcquireMagickMemory(sizeof(*image_info));
 348   if (image_info == (ImageInfo *) NULL)
 349     ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed");
 350   GetImageInfo(image_info);
 351   return(image_info);
 352 }
 353 \f
 354 /*
 355 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 356 %                                                                             %
 357 %                                                                             %
 358 %                                                                             %
 359 %   A c q u i r e N e x t I m a g e                                           %
 360 %                                                                             %
 361 %                                                                             %
 362 %                                                                             %
 363 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 364 %
 365 %  AcquireNextImage() initializes the next image in a sequence to
 366 %  default values.  The next member of image points to the newly allocated
 367 %  image.  If there is a memory shortage, next is assigned NULL.
 368 %
 369 %  The format of the AcquireNextImage method is:
 370 %
 371 %      void AcquireNextImage(const ImageInfo *image_info,Image *image,
 372 %        ExceptionInfo *exception)
 373 %
 374 %  A description of each parameter follows:
 375 %
 376 %    o image_info: Many of the image default values are set from this
 377 %      structure.  For example, filename, compression, depth, background color,
 378 %      and others.
 379 %
 380 %    o image: the image.
 381 %
 382 %    o exception: return any errors or warnings in this structure.
 383 %
 384 */
 385 MagickExport void AcquireNextImage(const ImageInfo *image_info,Image *image,
 386   ExceptionInfo *exception)
 387 {
 388   /*
 389     Allocate image structure.
 390   */
 391   assert(image != (Image *) NULL);
 392   assert(image->signature == MagickCoreSignature);
 393   if (image->debug != MagickFalse)
 394     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 395   image->next=AcquireImage(image_info,exception);
 396   if (GetNextImageInList(image) == (Image *) NULL)
 397     return;
 398   (void) CopyMagickString(GetNextImageInList(image)->filename,image->filename,
 399     MagickPathExtent);
 400   if (image_info != (ImageInfo *) NULL)
 401     (void) CopyMagickString(GetNextImageInList(image)->filename,
 402       image_info->filename,MagickPathExtent);
 403   DestroyBlob(GetNextImageInList(image));
 404   image->next->blob=ReferenceBlob(image->blob);
 405   image->next->endian=image->endian;
 406   image->next->scene=image->scene+1;
 407   image->next->previous=image;
 408 }
 409 \f
 410 /*
 411 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 412 %                                                                             %
 413 %                                                                             %
 414 %                                                                             %
 415 %     A p p e n d I m a g e s                                                 %
 416 %                                                                             %
 417 %                                                                             %
 418 %                                                                             %
 419 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 420 %
 421 %  AppendImages() takes all images from the current image pointer to the end
 422 %  of the image list and appends them to each other top-to-bottom if the
 423 %  stack parameter is true, otherwise left-to-right.
 424 %
 425 %  The current gravity setting effects how the image is justified in the
 426 %  final image.
 427 %
 428 %  The format of the AppendImages method is:
 429 %
 430 %      Image *AppendImages(const Image *images,const MagickBooleanType stack,
 431 %        ExceptionInfo *exception)
 432 %
 433 %  A description of each parameter follows:
 434 %
 435 %    o images: the image sequence.
 436 %
 437 %    o stack: A value other than 0 stacks the images top-to-bottom.
 438 %
 439 %    o exception: return any errors or warnings in this structure.
 440 %
 441 */
 442 MagickExport Image *AppendImages(const Image *images,
 443   const MagickBooleanType stack,ExceptionInfo *exception)
 444 {
 445 #define AppendImageTag  "Append/Image"
 446
 447   CacheView
 448     *append_view;
 449
 450   Image
 451     *append_image;
 452
 453   MagickBooleanType
 454     homogeneous_colorspace,
 455     status;
 456
 457   MagickOffsetType
 458     n;
 459
 460   PixelTrait
 461     alpha_trait;
 462
 463   RectangleInfo
 464     geometry;
 465
 466   register const Image
 467     *next;
 468
 469   size_t
 470     depth,
 471     height,
 472     number_images,
 473     width;
 474
 475   ssize_t
 476     x_offset,
 477     y,
 478     y_offset;
 479
 480   /*
 481     Compute maximum area of appended area.
 482   */
 483   assert(images != (Image *) NULL);
 484   assert(images->signature == MagickCoreSignature);
 485   if (images->debug != MagickFalse)
 486     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
 487   assert(exception != (ExceptionInfo *) NULL);
 488   assert(exception->signature == MagickCoreSignature);
 489   alpha_trait=images->alpha_trait;
 490   number_images=1;
 491   width=images->columns;
 492   height=images->rows;
 493   depth=images->depth;
 494   homogeneous_colorspace=MagickTrue;
 495   next=GetNextImageInList(images);
 496   for ( ; next != (Image *) NULL; next=GetNextImageInList(next))
 497   {
 498     if (next->depth > depth)
 499       depth=next->depth;
 500     if (next->colorspace != images->colorspace)
 501       homogeneous_colorspace=MagickFalse;
 502     if (next->alpha_trait != UndefinedPixelTrait)
 503       alpha_trait=BlendPixelTrait;
 504     number_images++;
 505     if (stack != MagickFalse)
 506       {
 507         if (next->columns > width)
 508           width=next->columns;
 509         height+=next->rows;
 510         continue;
 511       }
 512     width+=next->columns;
 513     if (next->rows > height)
 514       height=next->rows;
 515   }
 516   /*
 517     Append images.
 518   */
 519   append_image=CloneImage(images,width,height,MagickTrue,exception);
 520   if (append_image == (Image *) NULL)
 521     return((Image *) NULL);
 522   if (SetImageStorageClass(append_image,DirectClass,exception) == MagickFalse)
 523     {
 524       append_image=DestroyImage(append_image);
 525       return((Image *) NULL);
 526     }
 527   if (homogeneous_colorspace == MagickFalse)
 528     (void) SetImageColorspace(append_image,sRGBColorspace,exception);
 529   append_image->depth=depth;
 530   append_image->alpha_trait=alpha_trait;
 531   (void) SetImageBackgroundColor(append_image,exception);
 532   status=MagickTrue;
 533   x_offset=0;
 534   y_offset=0;
 535   next=images;
 536   append_view=AcquireAuthenticCacheView(append_image,exception);
 537   for (n=0; n < (MagickOffsetType) number_images; n++)
 538   {
 539     CacheView
 540       *image_view;
 541
 542     MagickBooleanType
 543       proceed;
 544
 545     SetGeometry(append_image,&geometry);
 546     GravityAdjustGeometry(next->columns,next->rows,next->gravity,&geometry);
 547     if (stack != MagickFalse)
 548       x_offset-=geometry.x;
 549     else
 550       y_offset-=geometry.y;
 551     image_view=AcquireVirtualCacheView(next,exception);
 552 #if defined(MAGICKCORE_OPENMP_SUPPORT)
 553     #pragma omp parallel for schedule(static,4) shared(status) \
 554       magick_threads(next,next,next->rows,1)
 555 #endif
 556     for (y=0; y < (ssize_t) next->rows; y++)
 557     {
 558       MagickBooleanType
 559         sync;
 560
 561       PixelInfo
 562         pixel;
 563
 564       register const Quantum
 565         *magick_restrict p;
 566
 567       register Quantum
 568         *magick_restrict q;
 569
 570       register ssize_t
 571         x;
 572
 573       if (status == MagickFalse)
 574         continue;
 575       p=GetCacheViewVirtualPixels(image_view,0,y,next->columns,1,exception);
 576       q=QueueCacheViewAuthenticPixels(append_view,x_offset,y+y_offset,
 577         next->columns,1,exception);
 578       if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
 579         {
 580           status=MagickFalse;
 581           continue;
 582         }
 583       GetPixelInfo(next,&pixel);
 584       for (x=0; x < (ssize_t) next->columns; x++)
 585       {
 586         if (GetPixelWriteMask(next,p) == 0)
 587           {
 588             SetPixelBackgoundColor(append_image,q);
 589             p+=GetPixelChannels(next);
 590             q+=GetPixelChannels(append_image);
 591             continue;
 592           }
 593         GetPixelInfoPixel(next,p,&pixel);
 594         SetPixelViaPixelInfo(append_image,&pixel,q);
 595         p+=GetPixelChannels(next);
 596         q+=GetPixelChannels(append_image);
 597       }
 598       sync=SyncCacheViewAuthenticPixels(append_view,exception);
 599       if (sync == MagickFalse)
 600         status=MagickFalse;
 601     }
 602     image_view=DestroyCacheView(image_view);
 603     if (stack == MagickFalse)
 604       {
 605         x_offset+=(ssize_t) next->columns;
 606         y_offset=0;
 607       }
 608     else
 609       {
 610         x_offset=0;
 611         y_offset+=(ssize_t) next->rows;
 612       }
 613     proceed=SetImageProgress(append_image,AppendImageTag,n,number_images);
 614     if (proceed == MagickFalse)
 615       break;
 616     next=GetNextImageInList(next);
 617   }
 618   append_view=DestroyCacheView(append_view);
 619   if (status == MagickFalse)
 620     append_image=DestroyImage(append_image);
 621   return(append_image);
 622 }
 623 \f
 624 /*
 625 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 626 %                                                                             %
 627 %                                                                             %
 628 %                                                                             %
 629 %   C a t c h I m a g e E x c e p t i o n                                     %
 630 %                                                                             %
 631 %                                                                             %
 632 %                                                                             %
 633 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 634 %
 635 %  CatchImageException() returns if no exceptions are found in the image
 636 %  sequence, otherwise it determines the most severe exception and reports
 637 %  it as a warning or error depending on the severity.
 638 %
 639 %  The format of the CatchImageException method is:
 640 %
 641 %      ExceptionType CatchImageException(Image *image)
 642 %
 643 %  A description of each parameter follows:
 644 %
 645 %    o image: An image sequence.
 646 %
 647 */
 648 MagickExport ExceptionType CatchImageException(Image *image)
 649 {
 650   ExceptionInfo
 651     *exception;
 652
 653   ExceptionType
 654     severity;
 655
 656   assert(image != (const Image *) NULL);
 657   assert(image->signature == MagickCoreSignature);
 658   if (image->debug != MagickFalse)
 659     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 660   exception=AcquireExceptionInfo();
 661   CatchException(exception);
 662   severity=exception->severity;
 663   exception=DestroyExceptionInfo(exception);
 664   return(severity);
 665 }
 666 \f
 667 /*
 668 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 669 %                                                                             %
 670 %                                                                             %
 671 %                                                                             %
 672 %   C l i p I m a g e P a t h                                                 %
 673 %                                                                             %
 674 %                                                                             %
 675 %                                                                             %
 676 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 677 %
 678 %  ClipImagePath() sets the image clip mask based any clipping path information
 679 %  if it exists.
 680 %
 681 %  The format of the ClipImagePath method is:
 682 %
 683 %      MagickBooleanType ClipImagePath(Image *image,const char *pathname,
 684 %        const MagickBooleanType inside,ExceptionInfo *exception)
 685 %
 686 %  A description of each parameter follows:
 687 %
 688 %    o image: the image.
 689 %
 690 %    o pathname: name of clipping path resource. If name is preceded by #, use
 691 %      clipping path numbered by name.
 692 %
 693 %    o inside: if non-zero, later operations take effect inside clipping path.
 694 %      Otherwise later operations take effect outside clipping path.
 695 %
 696 %    o exception: return any errors or warnings in this structure.
 697 %
 698 */
 699
 700 MagickExport MagickBooleanType ClipImage(Image *image,ExceptionInfo *exception)
 701 {
 702   return(ClipImagePath(image,"#1",MagickTrue,exception));
 703 }
 704
 705 MagickExport MagickBooleanType ClipImagePath(Image *image,const char *pathname,
 706   const MagickBooleanType inside,ExceptionInfo *exception)
 707 {
 708 #define ClipImagePathTag  "ClipPath/Image"
 709
 710   char
 711     *property;
 712
 713   const char
 714     *value;
 715
 716   Image
 717     *clip_mask;
 718
 719   ImageInfo
 720     *image_info;
 721
 722   assert(image != (const Image *) NULL);
 723   assert(image->signature == MagickCoreSignature);
 724   if (image->debug != MagickFalse)
 725     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 726   assert(pathname != NULL);
 727   property=AcquireString(pathname);
 728   (void) FormatLocaleString(property,MagickPathExtent,"8BIM:1999,2998:%s",
 729     pathname);
 730   value=GetImageProperty(image,property,exception);
 731   property=DestroyString(property);
 732   if (value == (const char *) NULL)
 733     {
 734       ThrowFileException(exception,OptionError,"NoClipPathDefined",
 735         image->filename);
 736       return(MagickFalse);
 737     }
 738   image_info=AcquireImageInfo();
 739   (void) CopyMagickString(image_info->filename,image->filename,
 740      MagickPathExtent);
 741   (void) ConcatenateMagickString(image_info->filename,pathname,
 742     MagickPathExtent);
 743   clip_mask=BlobToImage(image_info,value,strlen(value),exception);
 744   image_info=DestroyImageInfo(image_info);
 745   if (clip_mask == (Image *) NULL)
 746     return(MagickFalse);
 747   if (clip_mask->storage_class == PseudoClass)
 748     {
 749       (void) SyncImage(clip_mask,exception);
 750       if (SetImageStorageClass(clip_mask,DirectClass,exception) == MagickFalse)
 751         return(MagickFalse);
 752     }
 753   if (inside == MagickFalse)
 754     (void) NegateImage(clip_mask,MagickFalse,exception);
 755   (void) FormatLocaleString(clip_mask->magick_filename,MagickPathExtent,
 756     "8BIM:1999,2998:%s\nPS",pathname);
 757   (void) SetImageMask(image,WritePixelMask,clip_mask,exception);
 758   clip_mask=DestroyImage(clip_mask);
 759   return(MagickTrue);
 760 }
 761 \f
 762 /*
 763 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 764 %                                                                             %
 765 %                                                                             %
 766 %                                                                             %
 767 %   C l o n e I m a g e                                                       %
 768 %                                                                             %
 769 %                                                                             %
 770 %                                                                             %
 771 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 772 %
 773 %  CloneImage() copies an image and returns the copy as a new image object.
 774 %
 775 %  If the specified columns and rows is 0, an exact copy of the image is
 776 %  returned, otherwise the pixel data is undefined and must be initialized
 777 %  with the QueueAuthenticPixels() and SyncAuthenticPixels() methods.  On
 778 %  failure, a NULL image is returned and exception describes the reason for the
 779 %  failure.
 780 %
 781 %  The format of the CloneImage method is:
 782 %
 783 %      Image *CloneImage(const Image *image,const size_t columns,
 784 %        const size_t rows,const MagickBooleanType orphan,
 785 %        ExceptionInfo *exception)
 786 %
 787 %  A description of each parameter follows:
 788 %
 789 %    o image: the image.
 790 %
 791 %    o columns: the number of columns in the cloned image.
 792 %
 793 %    o rows: the number of rows in the cloned image.
 794 %
 795 %    o detach:  With a value other than 0, the cloned image is detached from
 796 %      its parent I/O stream.
 797 %
 798 %    o exception: return any errors or warnings in this structure.
 799 %
 800 */
 801 MagickExport Image *CloneImage(const Image *image,const size_t columns,
 802   const size_t rows,const MagickBooleanType detach,ExceptionInfo *exception)
 803 {
 804   Image
 805     *clone_image;
 806
 807   double
 808     scale;
 809
 810   size_t
 811     length;
 812
 813   /*
 814     Clone the image.
 815   */
 816   assert(image != (const Image *) NULL);
 817   assert(image->signature == MagickCoreSignature);
 818   if (image->debug != MagickFalse)
 819     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
 820   assert(exception != (ExceptionInfo *) NULL);
 821   assert(exception->signature == MagickCoreSignature);
 822   if ((image->columns == 0) || (image->rows == 0))
 823     {
 824       (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageError,
 825         "NegativeOrZeroImageSize","`%s'",image->filename);
 826       return((Image *) NULL);
 827     }
 828   clone_image=(Image *) AcquireMagickMemory(sizeof(*clone_image));
 829   if (clone_image == (Image *) NULL)
 830     ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
 831   (void) ResetMagickMemory(clone_image,0,sizeof(*clone_image));
 832   clone_image->signature=MagickCoreSignature;
 833   clone_image->storage_class=image->storage_class;
 834   clone_image->number_channels=image->number_channels;
 835   clone_image->number_meta_channels=image->number_meta_channels;
 836   clone_image->metacontent_extent=image->metacontent_extent;
 837   clone_image->colorspace=image->colorspace;
 838   clone_image->read_mask=image->read_mask;
 839   clone_image->write_mask=image->write_mask;
 840   clone_image->alpha_trait=image->alpha_trait;
 841   clone_image->columns=image->columns;
 842   clone_image->rows=image->rows;
 843   clone_image->dither=image->dither;
 844   if (image->colormap != (PixelInfo *) NULL)
 845     {
 846       /*
 847         Allocate and copy the image colormap.
 848       */
 849       clone_image->colors=image->colors;
 850       length=(size_t) image->colors;
 851       clone_image->colormap=(PixelInfo *) AcquireQuantumMemory(length,
 852         sizeof(*clone_image->colormap));
 853       if (clone_image->colormap == (PixelInfo *) NULL)
 854         {
 855           clone_image=DestroyImage(clone_image);
 856           ThrowImageException(ResourceLimitError,"MemoryAllocationFailed");
 857         }
 858       (void) CopyMagickMemory(clone_image->colormap,image->colormap,length*
 859         sizeof(*clone_image->colormap));
 860     }
 861   clone_image->image_info=CloneImageInfo(image->image_info);
 862   (void) CloneImageProfiles(clone_image,image);
 863   (void) CloneImageProperties(clone_image,image);
 864   (void) CloneImageArtifacts(clone_image,image);
 865   GetTimerInfo(&clone_image->timer);
 866   if (image->ascii85 != (void *) NULL)
 867     Ascii85Initialize(clone_image);
 868   clone_image->magick_columns=image->magick_columns;
 869   clone_image->magick_rows=image->magick_rows;
 870   clone_image->type=image->type;
 871   clone_image->channel_mask=image->channel_mask;
 872   clone_image->channel_map=ClonePixelChannelMap(image->channel_map);
 873   (void) CopyMagickString(clone_image->magick_filename,image->magick_filename,
 874     MagickPathExtent);
 875   (void) CopyMagickString(clone_image->magick,image->magick,MagickPathExtent);
 876   (void) CopyMagickString(clone_image->filename,image->filename,
 877     MagickPathExtent);
 878   clone_image->progress_monitor=image->progress_monitor;
 879   clone_image->client_data=image->client_data;
 880   clone_image->reference_count=1;
 881   clone_image->next=image->next;
 882   clone_image->previous=image->previous;
 883   clone_image->list=NewImageList();
 884   if (detach == MagickFalse)
 885     clone_image->blob=ReferenceBlob(image->blob);
 886   else
 887     {
 888       clone_image->next=NewImageList();
 889       clone_image->previous=NewImageList();
 890       clone_image->blob=CloneBlobInfo((BlobInfo *) NULL);
 891     }
 892   clone_image->ping=image->ping;
 893   clone_image->debug=IsEventLogging();
 894   clone_image->semaphore=AcquireSemaphoreInfo();
 895   if ((columns == 0) || (rows == 0))
 896     {
 897       if (image->montage != (char *) NULL)
 898         (void) CloneString(&clone_image->montage,image->montage);
 899       if (image->directory != (char *) NULL)
 900         (void) CloneString(&clone_image->directory,image->directory);
 901       clone_image->cache=ReferencePixelCache(image->cache);
 902       return(clone_image);
 903     }
 904   scale=1.0;
 905   if (image->columns != 0)
 906     scale=(double) columns/(double) image->columns;
 907   clone_image->page.width=(size_t) floor(scale*image->page.width+0.5);
 908   clone_image->page.x=(ssize_t) ceil(scale*image->page.x-0.5);
 909   clone_image->tile_offset.x=(ssize_t) ceil(scale*image->tile_offset.x-0.5);
 910   scale=1.0;
 911   if (image->rows != 0)
 912     scale=(double) rows/(double) image->rows;
 913   clone_image->page.height=(size_t) floor(scale*image->page.height+0.5);
 914   clone_image->page.y=(ssize_t) ceil(scale*image->page.y-0.5);
 915   clone_image->tile_offset.y=(ssize_t) ceil(scale*image->tile_offset.y-0.5);
 916   clone_image->cache=ClonePixelCache(image->cache);
 917   if (SetImageExtent(clone_image,columns,rows,exception) == MagickFalse)
 918     clone_image=DestroyImage(clone_image);
 919   return(clone_image);
 920 }
 921 \f
 922 /*
 923 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 924 %                                                                             %
 925 %                                                                             %
 926 %                                                                             %
 927 %   C l o n e I m a g e I n f o                                               %
 928 %                                                                             %
 929 %                                                                             %
 930 %                                                                             %
 931 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 932 %
 933 %  CloneImageInfo() makes a copy of the given image info structure.  If
 934 %  NULL is specified, a new image info structure is created initialized to
 935 %  default values.
 936 %
 937 %  The format of the CloneImageInfo method is:
 938 %
 939 %      ImageInfo *CloneImageInfo(const ImageInfo *image_info)
 940 %
 941 %  A description of each parameter follows:
 942 %
 943 %    o image_info: the image info.
 944 %
 945 */
 946 MagickExport ImageInfo *CloneImageInfo(const ImageInfo *image_info)
 947 {
 948   ImageInfo
 949     *clone_info;
 950
 951   clone_info=AcquireImageInfo();
 952   if (image_info == (ImageInfo *) NULL)
 953     return(clone_info);
 954   clone_info->compression=image_info->compression;
 955   clone_info->temporary=image_info->temporary;
 956   clone_info->adjoin=image_info->adjoin;
 957   clone_info->antialias=image_info->antialias;
 958   clone_info->scene=image_info->scene;
 959   clone_info->number_scenes=image_info->number_scenes;
 960   clone_info->depth=image_info->depth;
 961   (void) CloneString(&clone_info->size,image_info->size);
 962   (void) CloneString(&clone_info->extract,image_info->extract);
 963   (void) CloneString(&clone_info->scenes,image_info->scenes);
 964   (void) CloneString(&clone_info->page,image_info->page);
 965   clone_info->interlace=image_info->interlace;
 966   clone_info->endian=image_info->endian;
 967   clone_info->units=image_info->units;
 968   clone_info->quality=image_info->quality;
 969   (void) CloneString(&clone_info->sampling_factor,image_info->sampling_factor);
 970   (void) CloneString(&clone_info->server_name,image_info->server_name);
 971   (void) CloneString(&clone_info->font,image_info->font);
 972   (void) CloneString(&clone_info->texture,image_info->texture);
 973   (void) CloneString(&clone_info->density,image_info->density);
 974   clone_info->pointsize=image_info->pointsize;
 975   clone_info->fuzz=image_info->fuzz;
 976   clone_info->alpha_color=image_info->alpha_color;
 977   clone_info->background_color=image_info->background_color;
 978   clone_info->border_color=image_info->border_color;
 979   clone_info->transparent_color=image_info->transparent_color;
 980   clone_info->dither=image_info->dither;
 981   clone_info->monochrome=image_info->monochrome;
 982   clone_info->colorspace=image_info->colorspace;
 983   clone_info->type=image_info->type;
 984   clone_info->orientation=image_info->orientation;
 985   clone_info->ping=image_info->ping;
 986   clone_info->verbose=image_info->verbose;
 987   clone_info->progress_monitor=image_info->progress_monitor;
 988   clone_info->client_data=image_info->client_data;
 989   clone_info->cache=image_info->cache;
 990   if (image_info->cache != (void *) NULL)
 991     clone_info->cache=ReferencePixelCache(image_info->cache);
 992   if (image_info->profile != (void *) NULL)
 993     clone_info->profile=(void *) CloneStringInfo((StringInfo *)
 994       image_info->profile);
 995   SetImageInfoFile(clone_info,image_info->file);
 996   SetImageInfoBlob(clone_info,image_info->blob,image_info->length);
 997   clone_info->stream=image_info->stream;
 998   (void) CopyMagickString(clone_info->magick,image_info->magick,
 999     MagickPathExtent);
1000   (void) CopyMagickString(clone_info->unique,image_info->unique,
1001     MagickPathExtent);
1002   (void) CopyMagickString(clone_info->filename,image_info->filename,
1003     MagickPathExtent);
1004   clone_info->channel=image_info->channel;
1005   (void) CloneImageOptions(clone_info,image_info);
1006   clone_info->debug=IsEventLogging();
1007   clone_info->signature=image_info->signature;
1008   return(clone_info);
1009 }
1010 \f
1011 /*
1012 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1013 %                                                                             %
1014 %                                                                             %
1015 %                                                                             %
1016 %   C o p y I m a g e P i x e l s                                             %
1017 %                                                                             %
1018 %                                                                             %
1019 %                                                                             %
1020 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1021 %
1022 %  CopyImagePixels() copies pixels from the source image as defined by the
1023 %  geometry the destination image at the specified offset.
1024 %
1025 %  The format of the CopyImagePixels method is:
1026 %
1027 %      MagickBooleanType CopyImagePixels(Image *image,const Image *source_image,
1028 %        const RectangleInfo *geometry,const OffsetInfo *offset,
1029 %        ExceptionInfo *exception);
1030 %
1031 %  A description of each parameter follows:
1032 %
1033 %    o image: the destination image.
1034 %
1035 %    o source_image: the source image.
1036 %
1037 %    o geometry: define the dimensions of the source pixel rectangle.
1038 %
1039 %    o offset: define the offset in the destination image.
1040 %
1041 %    o exception: return any errors or warnings in this structure.
1042 %
1043 */
1044 MagickExport MagickBooleanType CopyImagePixels(Image *image,
1045   const Image *source_image,const RectangleInfo *geometry,
1046   const OffsetInfo *offset,ExceptionInfo *exception)
1047 {
1048 #define CopyImageTag  "Copy/Image"
1049
1050   CacheView
1051     *image_view,
1052     *source_view;
1053
1054   MagickBooleanType
1055     status;
1056
1057   MagickOffsetType
1058     progress;
1059
1060   ssize_t
1061     y;
1062
1063   assert(image != (Image *) NULL);
1064   if (image->debug != MagickFalse)
1065     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1066   assert(source_image != (Image *) NULL);
1067   assert(geometry != (RectangleInfo *) NULL);
1068   assert(offset != (OffsetInfo *) NULL);
1069   if ((offset->x < 0) || (offset->y < 0) ||
1070       ((ssize_t) (offset->x+geometry->width) > (ssize_t) image->columns) ||
1071       ((ssize_t) (offset->y+geometry->height) > (ssize_t) image->rows))
1072     ThrowBinaryException(OptionError,"GeometryDoesNotContainImage",
1073       image->filename);
1074   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
1075     return(MagickFalse);
1076   /*
1077     Copy image pixels.
1078   */
1079   status=MagickTrue;
1080   progress=0;
1081   source_view=AcquireVirtualCacheView(source_image,exception);
1082   image_view=AcquireAuthenticCacheView(image,exception);
1083 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1084   #pragma omp parallel for schedule(static,4) shared(progress,status) \
1085     magick_threads(image,source_image,geometry->height,1)
1086 #endif
1087   for (y=0; y < (ssize_t) geometry->height; y++)
1088   {
1089     MagickBooleanType
1090       sync;
1091
1092     register const Quantum
1093       *magick_restrict p;
1094
1095     register ssize_t
1096       x;
1097
1098     register Quantum
1099       *magick_restrict q;
1100
1101     if (status == MagickFalse)
1102       continue;
1103     p=GetCacheViewVirtualPixels(source_view,geometry->x,y+geometry->y,
1104       geometry->width,1,exception);
1105     q=QueueCacheViewAuthenticPixels(image_view,offset->x,y+offset->y,
1106       geometry->width,1,exception);
1107     if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1108       {
1109         status=MagickFalse;
1110         continue;
1111       }
1112     for (x=0; x < (ssize_t) geometry->width; x++)
1113     {
1114       register ssize_t
1115         i;
1116
1117       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1118       {
1119         PixelChannel channel=GetPixelChannelChannel(image,i);
1120         PixelTrait traits=GetPixelChannelTraits(image,channel);
1121         PixelTrait source_traits=GetPixelChannelTraits(source_image,channel);
1122         if ((traits == UndefinedPixelTrait) ||
1123             ((traits & UpdatePixelTrait) == 0) ||
1124             (source_traits == UndefinedPixelTrait))
1125           continue;
1126         SetPixelChannel(image,channel,p[i],q);
1127       }
1128       p+=GetPixelChannels(source_image);
1129       q+=GetPixelChannels(image);
1130     }
1131     sync=SyncCacheViewAuthenticPixels(image_view,exception);
1132     if (sync == MagickFalse)
1133       status=MagickFalse;
1134     if (image->progress_monitor != (MagickProgressMonitor) NULL)
1135       {
1136         MagickBooleanType
1137           proceed;
1138
1139 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1140         #pragma omp critical (MagickCore_CopyImage)
1141 #endif
1142         proceed=SetImageProgress(image,CopyImageTag,progress++,image->rows);
1143         if (proceed == MagickFalse)
1144           status=MagickFalse;
1145       }
1146   }
1147   source_view=DestroyCacheView(source_view);
1148   image_view=DestroyCacheView(image_view);
1149   return(status);
1150 }
1151 \f
1152 /*
1153 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1154 %                                                                             %
1155 %                                                                             %
1156 %                                                                             %
1157 %   D e s t r o y I m a g e                                                   %
1158 %                                                                             %
1159 %                                                                             %
1160 %                                                                             %
1161 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1162 %
1163 %  DestroyImage() dereferences an image, deallocating memory associated with
1164 %  the image if the reference count becomes zero.
1165 %
1166 %  The format of the DestroyImage method is:
1167 %
1168 %      Image *DestroyImage(Image *image)
1169 %
1170 %  A description of each parameter follows:
1171 %
1172 %    o image: the image.
1173 %
1174 */
1175 MagickExport Image *DestroyImage(Image *image)
1176 {
1177   MagickBooleanType
1178     destroy;
1179
1180   /*
1181     Dereference image.
1182   */
1183   assert(image != (Image *) NULL);
1184   assert(image->signature == MagickCoreSignature);
1185   if (image->debug != MagickFalse)
1186     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1187   destroy=MagickFalse;
1188   LockSemaphoreInfo(image->semaphore);
1189   image->reference_count--;
1190   if (image->reference_count == 0)
1191     destroy=MagickTrue;
1192   UnlockSemaphoreInfo(image->semaphore);
1193   if (destroy == MagickFalse)
1194     return((Image *) NULL);
1195   /*
1196     Destroy image.
1197   */
1198   DestroyImagePixels(image);
1199   image->channel_map=DestroyPixelChannelMap(image->channel_map);
1200   if (image->montage != (char *) NULL)
1201     image->montage=DestroyString(image->montage);
1202   if (image->directory != (char *) NULL)
1203     image->directory=DestroyString(image->directory);
1204   if (image->colormap != (PixelInfo *) NULL)
1205     image->colormap=(PixelInfo *) RelinquishMagickMemory(image->colormap);
1206   if (image->geometry != (char *) NULL)
1207     image->geometry=DestroyString(image->geometry);
1208   DestroyImageProfiles(image);
1209   DestroyImageProperties(image);
1210   DestroyImageArtifacts(image);
1211   if (image->ascii85 != (Ascii85Info *) NULL)
1212     image->ascii85=(Ascii85Info *) RelinquishMagickMemory(image->ascii85);
1213   if (image->image_info != (ImageInfo *) NULL)
1214     image->image_info=DestroyImageInfo(image->image_info);
1215   DestroyBlob(image);
1216   if (image->semaphore != (SemaphoreInfo *) NULL)
1217     RelinquishSemaphoreInfo(&image->semaphore);
1218   image->signature=(~MagickCoreSignature);
1219   image=(Image *) RelinquishMagickMemory(image);
1220   return(image);
1221 }
1222 \f
1223 /*
1224 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1225 %                                                                             %
1226 %                                                                             %
1227 %                                                                             %
1228 %   D e s t r o y I m a g e I n f o                                           %
1229 %                                                                             %
1230 %                                                                             %
1231 %                                                                             %
1232 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1233 %
1234 %  DestroyImageInfo() deallocates memory associated with an ImageInfo
1235 %  structure.
1236 %
1237 %  The format of the DestroyImageInfo method is:
1238 %
1239 %      ImageInfo *DestroyImageInfo(ImageInfo *image_info)
1240 %
1241 %  A description of each parameter follows:
1242 %
1243 %    o image_info: the image info.
1244 %
1245 */
1246 MagickExport ImageInfo *DestroyImageInfo(ImageInfo *image_info)
1247 {
1248   assert(image_info != (ImageInfo *) NULL);
1249   assert(image_info->signature == MagickCoreSignature);
1250   if (image_info->debug != MagickFalse)
1251     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
1252       image_info->filename);
1253   if (image_info->size != (char *) NULL)
1254     image_info->size=DestroyString(image_info->size);
1255   if (image_info->extract != (char *) NULL)
1256     image_info->extract=DestroyString(image_info->extract);
1257   if (image_info->scenes != (char *) NULL)
1258     image_info->scenes=DestroyString(image_info->scenes);
1259   if (image_info->page != (char *) NULL)
1260     image_info->page=DestroyString(image_info->page);
1261   if (image_info->sampling_factor != (char *) NULL)
1262     image_info->sampling_factor=DestroyString(
1263       image_info->sampling_factor);
1264   if (image_info->server_name != (char *) NULL)
1265     image_info->server_name=DestroyString(
1266       image_info->server_name);
1267   if (image_info->font != (char *) NULL)
1268     image_info->font=DestroyString(image_info->font);
1269   if (image_info->texture != (char *) NULL)
1270     image_info->texture=DestroyString(image_info->texture);
1271   if (image_info->density != (char *) NULL)
1272     image_info->density=DestroyString(image_info->density);
1273   if (image_info->cache != (void *) NULL)
1274     image_info->cache=DestroyPixelCache(image_info->cache);
1275   if (image_info->profile != (StringInfo *) NULL)
1276     image_info->profile=(void *) DestroyStringInfo((StringInfo *)
1277       image_info->profile);
1278   DestroyImageOptions(image_info);
1279   image_info->signature=(~MagickCoreSignature);
1280   image_info=(ImageInfo *) RelinquishMagickMemory(image_info);
1281   return(image_info);
1282 }
1283 \f
1284 /*
1285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1286 %                                                                             %
1287 %                                                                             %
1288 %                                                                             %
1289 +   D i s a s s o c i a t e I m a g e S t r e a m                             %
1290 %                                                                             %
1291 %                                                                             %
1292 %                                                                             %
1293 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1294 %
1295 %  DisassociateImageStream() disassociates the image stream.  It checks if the
1296 %  blob of the specified image is referenced by other images. If the reference
1297 %  count is higher then 1 a new blob is assigned to the specified image.
1298 %
1299 %  The format of the DisassociateImageStream method is:
1300 %
1301 %      void DisassociateImageStream(const Image *image)
1302 %
1303 %  A description of each parameter follows:
1304 %
1305 %    o image: the image.
1306 %
1307 */
1308 MagickExport void DisassociateImageStream(Image *image)
1309 {
1310   assert(image != (Image *) NULL);
1311   assert(image->signature == MagickCoreSignature);
1312   if (image->debug != MagickFalse)
1313     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1314   DisassociateBlob(image);
1315 }
1316 \f
1317 /*
1318 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1319 %                                                                             %
1320 %                                                                             %
1321 %                                                                             %
1322 %   G e t I m a g e I n f o                                                   %
1323 %                                                                             %
1324 %                                                                             %
1325 %                                                                             %
1326 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1327 %
1328 %  GetImageInfo() initializes image_info to default values.
1329 %
1330 %  The format of the GetImageInfo method is:
1331 %
1332 %      void GetImageInfo(ImageInfo *image_info)
1333 %
1334 %  A description of each parameter follows:
1335 %
1336 %    o image_info: the image info.
1337 %
1338 */
1339 MagickExport void GetImageInfo(ImageInfo *image_info)
1340 {
1341   char
1342     *synchronize;
1343
1344   ExceptionInfo
1345     *exception;
1346
1347   /*
1348     File and image dimension members.
1349   */
1350   (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1351   assert(image_info != (ImageInfo *) NULL);
1352   (void) ResetMagickMemory(image_info,0,sizeof(*image_info));
1353   image_info->adjoin=MagickTrue;
1354   image_info->interlace=NoInterlace;
1355   image_info->channel=DefaultChannels;
1356   image_info->quality=UndefinedCompressionQuality;
1357   image_info->antialias=MagickTrue;
1358   image_info->dither=MagickTrue;
1359   synchronize=GetEnvironmentValue("MAGICK_SYNCHRONIZE");
1360   if (synchronize != (const char *) NULL)
1361     {
1362       image_info->synchronize=IsStringTrue(synchronize);
1363       synchronize=DestroyString(synchronize);
1364     }
1365   exception=AcquireExceptionInfo();
1366   (void) QueryColorCompliance(AlphaColor,AllCompliance,&image_info->alpha_color,
1367     exception);
1368   (void) QueryColorCompliance(BackgroundColor,AllCompliance,
1369     &image_info->background_color,exception);
1370   (void) QueryColorCompliance(BorderColor,AllCompliance,
1371     &image_info->border_color,exception);
1372   (void) QueryColorCompliance(TransparentColor,AllCompliance,
1373     &image_info->transparent_color,exception);
1374   exception=DestroyExceptionInfo(exception);
1375   image_info->debug=IsEventLogging();
1376   image_info->signature=MagickCoreSignature;
1377 }
1378 \f
1379 /*
1380 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1381 %                                                                             %
1382 %                                                                             %
1383 %                                                                             %
1384 %   G e t I m a g e I n f o F i l e                                           %
1385 %                                                                             %
1386 %                                                                             %
1387 %                                                                             %
1388 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1389 %
1390 %  GetImageInfoFile() returns the image info file member.
1391 %
1392 %  The format of the GetImageInfoFile method is:
1393 %
1394 %      FILE *GetImageInfoFile(const ImageInfo *image_info)
1395 %
1396 %  A description of each parameter follows:
1397 %
1398 %    o image_info: the image info.
1399 %
1400 */
1401 MagickExport FILE *GetImageInfoFile(const ImageInfo *image_info)
1402 {
1403   return(image_info->file);
1404 }
1405 \f
1406 /*
1407 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1408 %                                                                             %
1409 %                                                                             %
1410 %                                                                             %
1411 %   G e t I m a g e M a s k                                                   %
1412 %                                                                             %
1413 %                                                                             %
1414 %                                                                             %
1415 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1416 %
1417 %  GetImageMask() returns the mask associated with the image.
1418 %
1419 %  The format of the GetImageMask method is:
1420 %
1421 %      Image *GetImageMask(const Image *image,const PixelMask type,
1422 %        ExceptionInfo *exception)
1423 %
1424 %  A description of each parameter follows:
1425 %
1426 %    o image: the image.
1427 %
1428 %    o type: the mask type, ReadPixelMask or WritePixelMask.
1429 %
1430 */
1431 MagickExport Image *GetImageMask(const Image *image,const PixelMask type,
1432   ExceptionInfo *exception)
1433 {
1434   CacheView
1435     *mask_view,
1436     *image_view;
1437
1438   Image
1439     *mask_image;
1440
1441   MagickBooleanType
1442     status;
1443
1444   ssize_t
1445     y;
1446
1447   /*
1448     Get image mask.
1449   */
1450   assert(image != (Image *) NULL);
1451   if (image->debug != MagickFalse)
1452     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1453   assert(image->signature == MagickCoreSignature);
1454   mask_image=CloneImage(image,image->columns,image->rows,MagickTrue,exception);
1455   if (mask_image == (Image *) NULL)
1456     return((Image *) NULL);
1457   status=MagickTrue;
1458   mask_image->alpha_trait=UndefinedPixelTrait;
1459   (void) SetImageColorspace(mask_image,GRAYColorspace,exception);
1460   mask_image->read_mask=MagickFalse;
1461   image_view=AcquireVirtualCacheView(image,exception);
1462   mask_view=AcquireAuthenticCacheView(mask_image,exception);
1463   for (y=0; y < (ssize_t) image->rows; y++)
1464   {
1465     register const Quantum
1466       *magick_restrict p;
1467
1468     register Quantum
1469       *magick_restrict q;
1470
1471     register ssize_t
1472       x;
1473
1474     if (status == MagickFalse)
1475       continue;
1476     p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1477     q=GetCacheViewAuthenticPixels(mask_view,0,y,mask_image->columns,1,
1478       exception);
1479     if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
1480       {
1481         status=MagickFalse;
1482         continue;
1483       }
1484     for (x=0; x < (ssize_t) image->columns; x++)
1485     {
1486       switch (type)
1487       {
1488         case WritePixelMask:
1489         {
1490           SetPixelGray(mask_image,GetPixelWriteMask(image,p),q);
1491           break;
1492         }
1493         default:
1494         {
1495           SetPixelGray(mask_image,GetPixelReadMask(image,p),q);
1496           break;
1497         }
1498       }
1499       p+=GetPixelChannels(image);
1500       q+=GetPixelChannels(mask_image);
1501     }
1502     if (SyncCacheViewAuthenticPixels(mask_view,exception) == MagickFalse)
1503       status=MagickFalse;
1504   }
1505   mask_view=DestroyCacheView(mask_view);
1506   image_view=DestroyCacheView(image_view);
1507   if (status == MagickFalse)
1508     mask_image=DestroyImage(mask_image);
1509   return(mask_image);
1510 }
1511 \f
1512 /*
1513 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1514 %                                                                             %
1515 %                                                                             %
1516 %                                                                             %
1517 +   G e t I m a g e R e f e r e n c e C o u n t                               %
1518 %                                                                             %
1519 %                                                                             %
1520 %                                                                             %
1521 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1522 %
1523 %  GetImageReferenceCount() returns the image reference count.
1524 %
1525 %  The format of the GetReferenceCount method is:
1526 %
1527 %      ssize_t GetImageReferenceCount(Image *image)
1528 %
1529 %  A description of each parameter follows:
1530 %
1531 %    o image: the image.
1532 %
1533 */
1534 MagickExport ssize_t GetImageReferenceCount(Image *image)
1535 {
1536   ssize_t
1537     reference_count;
1538
1539   assert(image != (Image *) NULL);
1540   assert(image->signature == MagickCoreSignature);
1541   if (image->debug != MagickFalse)
1542     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1543   LockSemaphoreInfo(image->semaphore);
1544   reference_count=image->reference_count;
1545   UnlockSemaphoreInfo(image->semaphore);
1546   return(reference_count);
1547 }
1548 \f
1549 /*
1550 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1551 %                                                                             %
1552 %                                                                             %
1553 %                                                                             %
1554 %   G e t I m a g e V i r t u a l P i x e l M e t h o d                       %
1555 %                                                                             %
1556 %                                                                             %
1557 %                                                                             %
1558 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1559 %
1560 %  GetImageVirtualPixelMethod() gets the "virtual pixels" method for the
1561 %  image.  A virtual pixel is any pixel access that is outside the boundaries
1562 %  of the image cache.
1563 %
1564 %  The format of the GetImageVirtualPixelMethod() method is:
1565 %
1566 %      VirtualPixelMethod GetImageVirtualPixelMethod(const Image *image)
1567 %
1568 %  A description of each parameter follows:
1569 %
1570 %    o image: the image.
1571 %
1572 */
1573 MagickExport VirtualPixelMethod GetImageVirtualPixelMethod(const Image *image)
1574 {
1575   assert(image != (Image *) NULL);
1576   assert(image->signature == MagickCoreSignature);
1577   if (image->debug != MagickFalse)
1578     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1579   return(GetPixelCacheVirtualMethod(image));
1580 }
1581 \f
1582 /*
1583 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1584 %                                                                             %
1585 %                                                                             %
1586 %                                                                             %
1587 %  I n t e r p r e t I m a g e F i l e n a m e                                %
1588 %                                                                             %
1589 %                                                                             %
1590 %                                                                             %
1591 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1592 %
1593 %  InterpretImageFilename() interprets embedded characters in an image filename.
1594 %  The filename length is returned.
1595 %
1596 %  The format of the InterpretImageFilename method is:
1597 %
1598 %      size_t InterpretImageFilename(const ImageInfo *image_info,Image *image,
1599 %        const char *format,int value,char *filename,ExceptionInfo *exception)
1600 %
1601 %  A description of each parameter follows.
1602 %
1603 %    o image_info: the image info..
1604 %
1605 %    o image: the image.
1606 %
1607 %    o format:  A filename describing the format to use to write the numeric
1608 %      argument. Only the first numeric format identifier is replaced.
1609 %
1610 %    o value:  Numeric value to substitute into format filename.
1611 %
1612 %    o filename:  return the formatted filename in this character buffer.
1613 %
1614 %    o exception: return any errors or warnings in this structure.
1615 %
1616 */
1617 MagickExport size_t InterpretImageFilename(const ImageInfo *image_info,
1618   Image *image,const char *format,int value,char *filename,
1619   ExceptionInfo *exception)
1620 {
1621   char
1622     *q;
1623
1624   int
1625     c;
1626
1627   MagickBooleanType
1628     canonical;
1629
1630   register const char
1631     *p;
1632
1633   size_t
1634     length;
1635
1636   canonical=MagickFalse;
1637   length=0;
1638   (void) CopyMagickString(filename,format,MagickPathExtent);
1639   for (p=strchr(format,'%'); p != (char *) NULL; p=strchr(p+1,'%'))
1640   {
1641     q=(char *) p+1;
1642     if (*q == '%')
1643       {
1644         p=q+1;
1645         continue;
1646       }
1647     if (*q == '0')
1648       {
1649         ssize_t
1650           foo;
1651
1652         foo=(ssize_t) strtol(q,&q,10);
1653         (void) foo;
1654       }
1655     switch (*q)
1656     {
1657       case 'd':
1658       case 'o':
1659       case 'x':
1660       {
1661         q++;
1662         c=(*q);
1663         *q='\0';
1664         (void) FormatLocaleString(filename+(p-format),(size_t)
1665           (MagickPathExtent-(p-format)),p,value);
1666         *q=c;
1667         (void) ConcatenateMagickString(filename,q,MagickPathExtent);
1668         canonical=MagickTrue;
1669         if (*(q-1) != '%')
1670           break;
1671         p++;
1672         break;
1673       }
1674       case '[':
1675       {
1676         char
1677           pattern[MagickPathExtent];
1678
1679         const char
1680           *option;
1681
1682         register char
1683           *r;
1684
1685         register ssize_t
1686           i;
1687
1688         ssize_t
1689           depth;
1690
1691         /*
1692           Image option.
1693         */
1694         /* FUTURE: Compare update with code from InterpretImageProperties()
1695            Note that a 'filename:' property should not need depth recursion.
1696         */
1697         if (strchr(p,']') == (char *) NULL)
1698           break;
1699         depth=1;
1700         r=q+1;
1701         for (i=0; (i < (MagickPathExtent-1L)) && (*r != '\0'); i++)
1702         {
1703           if (*r == '[')
1704             depth++;
1705           if (*r == ']')
1706             depth--;
1707           if (depth <= 0)
1708             break;
1709           pattern[i]=(*r++);
1710         }
1711         pattern[i]='\0';
1712         if (LocaleNCompare(pattern,"filename:",9) != 0)
1713           break;
1714         option=(const char *) NULL;
1715         if (image != (Image *) NULL)
1716           option=GetImageProperty(image,pattern,exception);
1717         if ((option == (const char *) NULL) && (image != (Image *) NULL))
1718           option=GetImageArtifact(image,pattern);
1719         if ((option == (const char *) NULL) &&
1720             (image_info != (ImageInfo *) NULL))
1721           option=GetImageOption(image_info,pattern);
1722         if (option == (const char *) NULL)
1723           break;
1724         q--;
1725         c=(*q);
1726         *q='\0';
1727         (void) CopyMagickString(filename+(p-format-length),option,(size_t)
1728           (MagickPathExtent-(p-format-length)));
1729         length+=strlen(pattern)-1;
1730         *q=c;
1731         (void) ConcatenateMagickString(filename,r+1,MagickPathExtent);
1732         canonical=MagickTrue;
1733         if (*(q-1) != '%')
1734           break;
1735         p++;
1736         break;
1737       }
1738       default:
1739         break;
1740     }
1741   }
1742   for (q=filename; *q != '\0'; q++)
1743     if ((*q == '%') && (*(q+1) == '%'))
1744       {
1745         (void) CopyMagickString(q,q+1,(size_t) (MagickPathExtent-(q-filename)));
1746         canonical=MagickTrue;
1747       }
1748   if (canonical == MagickFalse)
1749     (void) CopyMagickString(filename,format,MagickPathExtent);
1750   return(strlen(filename));
1751 }
1752 \f
1753 /*
1754 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1755 %                                                                             %
1756 %                                                                             %
1757 %                                                                             %
1758 %   I s H i g h D y n a m i c R a n g e I m a g e                             %
1759 %                                                                             %
1760 %                                                                             %
1761 %                                                                             %
1762 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1763 %
1764 %  IsHighDynamicRangeImage() returns MagickTrue if any pixel component is
1765 %  non-integer or exceeds the bounds of the quantum depth (e.g. for Q16
1766 %  0..65535.
1767 %
1768 %  The format of the IsHighDynamicRangeImage method is:
1769 %
1770 %      MagickBooleanType IsHighDynamicRangeImage(const Image *image,
1771 %        ExceptionInfo *exception)
1772 %
1773 %  A description of each parameter follows:
1774 %
1775 %    o image: the image.
1776 %
1777 %    o exception: return any errors or warnings in this structure.
1778 %
1779 */
1780 MagickExport MagickBooleanType IsHighDynamicRangeImage(const Image *image,
1781   ExceptionInfo *exception)
1782 {
1783 #if !defined(MAGICKCORE_HDRI_SUPPORT)
1784   (void) image;
1785   (void) exception;
1786   return(MagickFalse);
1787 #else
1788   CacheView
1789     *image_view;
1790
1791   MagickBooleanType
1792     status;
1793
1794   ssize_t
1795     y;
1796
1797   assert(image != (Image *) NULL);
1798   assert(image->signature == MagickCoreSignature);
1799   if (image->debug != MagickFalse)
1800     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
1801   status=MagickTrue;
1802   image_view=AcquireVirtualCacheView(image,exception);
1803 #if defined(MAGICKCORE_OPENMP_SUPPORT)
1804   #pragma omp parallel for schedule(static,4) shared(status) \
1805     magick_threads(image,image,image->rows,1)
1806 #endif
1807   for (y=0; y < (ssize_t) image->rows; y++)
1808   {
1809     register const Quantum
1810       *p;
1811
1812     register ssize_t
1813       x;
1814
1815     if (status == MagickFalse)
1816       continue;
1817     p=GetCacheViewVirtualPixels(image_view,0,y,image->columns,1,exception);
1818     if (p == (const Quantum *) NULL)
1819       {
1820         status=MagickFalse;
1821         continue;
1822       }
1823     for (x=0; x < (ssize_t) image->columns; x++)
1824     {
1825       register ssize_t
1826         i;
1827
1828       if (GetPixelWriteMask(image,p) == 0)
1829         {
1830           p+=GetPixelChannels(image);
1831           continue;
1832         }
1833       for (i=0; i < (ssize_t) GetPixelChannels(image); i++)
1834       {
1835         double
1836           pixel;
1837
1838         PixelTrait
1839           traits;
1840
1841         traits=GetPixelChannelTraits(image,(PixelChannel) i);
1842         if (traits == UndefinedPixelTrait)
1843           continue;
1844         pixel=(double) p[i];
1845         if ((pixel < 0.0) || (pixel > QuantumRange) ||
1846             (pixel != (double) ((QuantumAny) pixel)))
1847           break;
1848       }
1849       p+=GetPixelChannels(image);
1850       if (i < (ssize_t) GetPixelChannels(image))
1851         status=MagickFalse;
1852     }
1853     if (x < (ssize_t) image->columns)
1854       status=MagickFalse;
1855   }
1856   image_view=DestroyCacheView(image_view);
1857   return(status != MagickFalse ? MagickFalse : MagickTrue);
1858 #endif
1859 }
1860 \f
1861 /*
1862 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1863 %                                                                             %
1864 %                                                                             %
1865 %                                                                             %
1866 %     I s I m a g e O b j e c t                                               %
1867 %                                                                             %
1868 %                                                                             %
1869 %                                                                             %
1870 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1871 %
1872 %  IsImageObject() returns MagickTrue if the image sequence contains a valid
1873 %  set of image objects.
1874 %
1875 %  The format of the IsImageObject method is:
1876 %
1877 %      MagickBooleanType IsImageObject(const Image *image)
1878 %
1879 %  A description of each parameter follows:
1880 %
1881 %    o image: the image.
1882 %
1883 */
1884 MagickExport MagickBooleanType IsImageObject(const Image *image)
1885 {
1886   register const Image
1887     *p;
1888
1889   assert(image != (Image *) NULL);
1890   if (image->debug != MagickFalse)
1891     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1892   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1893     if (p->signature != MagickCoreSignature)
1894       return(MagickFalse);
1895   return(MagickTrue);
1896 }
1897 \f
1898 /*
1899 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1900 %                                                                             %
1901 %                                                                             %
1902 %                                                                             %
1903 %     I s T a i n t I m a g e                                                 %
1904 %                                                                             %
1905 %                                                                             %
1906 %                                                                             %
1907 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1908 %
1909 %  IsTaintImage() returns MagickTrue any pixel in the image has been altered
1910 %  since it was first constituted.
1911 %
1912 %  The format of the IsTaintImage method is:
1913 %
1914 %      MagickBooleanType IsTaintImage(const Image *image)
1915 %
1916 %  A description of each parameter follows:
1917 %
1918 %    o image: the image.
1919 %
1920 */
1921 MagickExport MagickBooleanType IsTaintImage(const Image *image)
1922 {
1923   char
1924     magick[MagickPathExtent],
1925     filename[MagickPathExtent];
1926
1927   register const Image
1928     *p;
1929
1930   assert(image != (Image *) NULL);
1931   if (image->debug != MagickFalse)
1932     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
1933   assert(image->signature == MagickCoreSignature);
1934   (void) CopyMagickString(magick,image->magick,MagickPathExtent);
1935   (void) CopyMagickString(filename,image->filename,MagickPathExtent);
1936   for (p=image; p != (Image *) NULL; p=GetNextImageInList(p))
1937   {
1938     if (p->taint != MagickFalse)
1939       return(MagickTrue);
1940     if (LocaleCompare(p->magick,magick) != 0)
1941       return(MagickTrue);
1942     if (LocaleCompare(p->filename,filename) != 0)
1943       return(MagickTrue);
1944   }
1945   return(MagickFalse);
1946 }
1947 \f
1948 /*
1949 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1950 %                                                                             %
1951 %                                                                             %
1952 %                                                                             %
1953 %   M o d i f y I m a g e                                                     %
1954 %                                                                             %
1955 %                                                                             %
1956 %                                                                             %
1957 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1958 %
1959 %  ModifyImage() ensures that there is only a single reference to the image
1960 %  to be modified, updating the provided image pointer to point to a clone of
1961 %  the original image if necessary.
1962 %
1963 %  The format of the ModifyImage method is:
1964 %
1965 %      MagickBooleanType ModifyImage(Image *image,ExceptionInfo *exception)
1966 %
1967 %  A description of each parameter follows:
1968 %
1969 %    o image: the image.
1970 %
1971 %    o exception: return any errors or warnings in this structure.
1972 %
1973 */
1974 MagickExport MagickBooleanType ModifyImage(Image **image,
1975   ExceptionInfo *exception)
1976 {
1977   Image
1978     *clone_image;
1979
1980   assert(image != (Image **) NULL);
1981   assert(*image != (Image *) NULL);
1982   assert((*image)->signature == MagickCoreSignature);
1983   if ((*image)->debug != MagickFalse)
1984     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",(*image)->filename);
1985   if (GetImageReferenceCount(*image) <= 1)
1986     return(MagickTrue);
1987   clone_image=CloneImage(*image,0,0,MagickTrue,exception);
1988   LockSemaphoreInfo((*image)->semaphore);
1989   (*image)->reference_count--;
1990   UnlockSemaphoreInfo((*image)->semaphore);
1991   *image=clone_image;
1992   return(MagickTrue);
1993 }
1994 \f
1995 /*
1996 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
1997 %                                                                             %
1998 %                                                                             %
1999 %                                                                             %
2000 %   N e w M a g i c k I m a g e                                               %
2001 %                                                                             %
2002 %                                                                             %
2003 %                                                                             %
2004 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2005 %
2006 %  NewMagickImage() creates a blank image canvas of the specified size and
2007 %  background color.
2008 %
2009 %  The format of the NewMagickImage method is:
2010 %
2011 %      Image *NewMagickImage(const ImageInfo *image_info,const size_t width,
2012 %        const size_t height,const PixelInfo *background,
2013 %        ExceptionInfo *exception)
2014 %
2015 %  A description of each parameter follows:
2016 %
2017 %    o image: the image.
2018 %
2019 %    o width: the image width.
2020 %
2021 %    o height: the image height.
2022 %
2023 %    o background: the image color.
2024 %
2025 %    o exception: return any errors or warnings in this structure.
2026 %
2027 */
2028 MagickExport Image *NewMagickImage(const ImageInfo *image_info,
2029   const size_t width,const size_t height,const PixelInfo *background,
2030   ExceptionInfo *exception)
2031 {
2032   CacheView
2033     *image_view;
2034
2035   Image
2036     *image;
2037
2038   MagickBooleanType
2039     status;
2040
2041   ssize_t
2042     y;
2043
2044   assert(image_info != (const ImageInfo *) NULL);
2045   if (image_info->debug != MagickFalse)
2046     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2047   assert(image_info->signature == MagickCoreSignature);
2048   assert(background != (const PixelInfo *) NULL);
2049   image=AcquireImage(image_info,exception);
2050   image->columns=width;
2051   image->rows=height;
2052   image->colorspace=background->colorspace;
2053   image->alpha_trait=background->alpha_trait;
2054   image->fuzz=background->fuzz;
2055   image->depth=background->depth;
2056   status=MagickTrue;
2057   image_view=AcquireAuthenticCacheView(image,exception);
2058 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2059   #pragma omp parallel for schedule(static,4) shared(status) \
2060     magick_threads(image,image,image->rows,1)
2061 #endif
2062   for (y=0; y < (ssize_t) image->rows; y++)
2063   {
2064     register Quantum
2065       *magick_restrict q;
2066
2067     register ssize_t
2068       x;
2069
2070     if (status == MagickFalse)
2071       continue;
2072     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2073     if (q == (Quantum *) NULL)
2074       {
2075         status=MagickFalse;
2076         continue;
2077       }
2078     for (x=0; x < (ssize_t) image->columns; x++)
2079     {
2080       SetPixelViaPixelInfo(image,background,q);
2081       q+=GetPixelChannels(image);
2082     }
2083     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2084       status=MagickFalse;
2085   }
2086   image_view=DestroyCacheView(image_view);
2087   if (status == MagickFalse)
2088     image=DestroyImage(image);
2089   return(image);
2090 }
2091 \f
2092 /*
2093 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2094 %                                                                             %
2095 %                                                                             %
2096 %                                                                             %
2097 %   R e f e r e n c e I m a g e                                               %
2098 %                                                                             %
2099 %                                                                             %
2100 %                                                                             %
2101 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2102 %
2103 %  ReferenceImage() increments the reference count associated with an image
2104 %  returning a pointer to the image.
2105 %
2106 %  The format of the ReferenceImage method is:
2107 %
2108 %      Image *ReferenceImage(Image *image)
2109 %
2110 %  A description of each parameter follows:
2111 %
2112 %    o image: the image.
2113 %
2114 */
2115 MagickExport Image *ReferenceImage(Image *image)
2116 {
2117   assert(image != (Image *) NULL);
2118   if (image->debug != MagickFalse)
2119     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2120   assert(image->signature == MagickCoreSignature);
2121   LockSemaphoreInfo(image->semaphore);
2122   image->reference_count++;
2123   UnlockSemaphoreInfo(image->semaphore);
2124   return(image);
2125 }
2126 \f
2127 /*
2128 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2129 %                                                                             %
2130 %                                                                             %
2131 %                                                                             %
2132 %   R e s e t I m a g e P a g e                                               %
2133 %                                                                             %
2134 %                                                                             %
2135 %                                                                             %
2136 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2137 %
2138 %  ResetImagePage() resets the image page canvas and position.
2139 %
2140 %  The format of the ResetImagePage method is:
2141 %
2142 %      MagickBooleanType ResetImagePage(Image *image,const char *page)
2143 %
2144 %  A description of each parameter follows:
2145 %
2146 %    o image: the image.
2147 %
2148 %    o page: the relative page specification.
2149 %
2150 */
2151 MagickExport MagickBooleanType ResetImagePage(Image *image,const char *page)
2152 {
2153   MagickStatusType
2154     flags;
2155
2156   RectangleInfo
2157     geometry;
2158
2159   assert(image != (Image *) NULL);
2160   assert(image->signature == MagickCoreSignature);
2161   if (image->debug != MagickFalse)
2162     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
2163   flags=ParseAbsoluteGeometry(page,&geometry);
2164   if ((flags & WidthValue) != 0)
2165     {
2166       if ((flags & HeightValue) == 0)
2167         geometry.height=geometry.width;
2168       image->page.width=geometry.width;
2169       image->page.height=geometry.height;
2170     }
2171   if ((flags & AspectValue) != 0)
2172     {
2173       if ((flags & XValue) != 0)
2174         image->page.x+=geometry.x;
2175       if ((flags & YValue) != 0)
2176         image->page.y+=geometry.y;
2177     }
2178   else
2179     {
2180       if ((flags & XValue) != 0)
2181         {
2182           image->page.x=geometry.x;
2183           if ((image->page.width == 0) && (geometry.x > 0))
2184             image->page.width=image->columns+geometry.x;
2185         }
2186       if ((flags & YValue) != 0)
2187         {
2188           image->page.y=geometry.y;
2189           if ((image->page.height == 0) && (geometry.y > 0))
2190             image->page.height=image->rows+geometry.y;
2191         }
2192     }
2193   return(MagickTrue);
2194 }
2195 \f
2196 /*
2197 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2198 %                                                                             %
2199 %                                                                             %
2200 %                                                                             %
2201 %   S e t I m a g e B a c k g r o u n d C o l o r                             %
2202 %                                                                             %
2203 %                                                                             %
2204 %                                                                             %
2205 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2206 %
2207 %  SetImageBackgroundColor() initializes the image pixels to the image
2208 %  background color.  The background color is defined by the background_color
2209 %  member of the image structure.
2210 %
2211 %  The format of the SetImage method is:
2212 %
2213 %      MagickBooleanType SetImageBackgroundColor(Image *image,
2214 %        ExceptionInfo *exception)
2215 %
2216 %  A description of each parameter follows:
2217 %
2218 %    o image: the image.
2219 %
2220 %    o exception: return any errors or warnings in this structure.
2221 %
2222 */
2223 MagickExport MagickBooleanType SetImageBackgroundColor(Image *image,
2224   ExceptionInfo *exception)
2225 {
2226   CacheView
2227     *image_view;
2228
2229   MagickBooleanType
2230     status;
2231
2232   PixelInfo
2233     background;
2234
2235   ssize_t
2236     y;
2237
2238   assert(image != (Image *) NULL);
2239   if (image->debug != MagickFalse)
2240     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2241   assert(image->signature == MagickCoreSignature);
2242   if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
2243     return(MagickFalse);
2244   if ((image->background_color.alpha != OpaqueAlpha) &&
2245       (image->alpha_trait == UndefinedPixelTrait))
2246     (void) SetImageAlphaChannel(image,OnAlphaChannel,exception);
2247   ConformPixelInfo(image,&image->background_color,&background,exception);
2248   /*
2249     Set image background color.
2250   */
2251   status=MagickTrue;
2252   image_view=AcquireAuthenticCacheView(image,exception);
2253   for (y=0; y < (ssize_t) image->rows; y++)
2254   {
2255     register Quantum
2256       *magick_restrict q;
2257
2258     register ssize_t
2259       x;
2260
2261     if (status == MagickFalse)
2262       continue;
2263     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2264     if (q == (Quantum *) NULL)
2265       {
2266         status=MagickFalse;
2267         continue;
2268       }
2269     for (x=0; x < (ssize_t) image->columns; x++)
2270     {
2271       SetPixelViaPixelInfo(image,&background,q);
2272       q+=GetPixelChannels(image);
2273     }
2274     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2275       status=MagickFalse;
2276   }
2277   image_view=DestroyCacheView(image_view);
2278   return(status);
2279 }
2280 \f
2281 /*
2282 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2283 %                                                                             %
2284 %                                                                             %
2285 %                                                                             %
2286 %   S e t I m a g e C h a n n e l M a s k                                     %
2287 %                                                                             %
2288 %                                                                             %
2289 %                                                                             %
2290 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2291 %
2292 %  SetImageChannelMask() sets the image channel mask from the specified channel
2293 %  mask.
2294 %
2295 %  The format of the SetImageChannelMask method is:
2296 %
2297 %      ChannelType SetImageChannelMask(Image *image,
2298 %        const ChannelType channel_mask)
2299 %
2300 %  A description of each parameter follows:
2301 %
2302 %    o image: the image.
2303 %
2304 %    o channel_mask: the channel mask.
2305 %
2306 */
2307 MagickExport ChannelType SetImageChannelMask(Image *image,
2308   const ChannelType channel_mask)
2309 {
2310   return(SetPixelChannelMask(image,channel_mask));
2311 }
2312 \f
2313 /*
2314 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2315 %                                                                             %
2316 %                                                                             %
2317 %                                                                             %
2318 %   S e t I m a g e C o l o r                                                 %
2319 %                                                                             %
2320 %                                                                             %
2321 %                                                                             %
2322 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2323 %
2324 %  SetImageColor() set the entire image canvas to the specified color.
2325 %
2326 %  The format of the SetImageColor method is:
2327 %
2328 %      MagickBooleanType SetImageColor(Image *image,const PixelInfo *color,
2329 %        ExeptionInfo *exception)
2330 %
2331 %  A description of each parameter follows:
2332 %
2333 %    o image: the image.
2334 %
2335 %    o background: the image color.
2336 %
2337 %    o exception: return any errors or warnings in this structure.
2338 %
2339 */
2340 MagickExport MagickBooleanType SetImageColor(Image *image,
2341   const PixelInfo *color,ExceptionInfo *exception)
2342 {
2343   CacheView
2344     *image_view;
2345
2346   MagickBooleanType
2347     status;
2348
2349   ssize_t
2350     y;
2351
2352   assert(image != (Image *) NULL);
2353   if (image->debug != MagickFalse)
2354     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2355   assert(image->signature == MagickCoreSignature);
2356   assert(color != (const PixelInfo *) NULL);
2357   image->colorspace=color->colorspace;
2358   image->alpha_trait=color->alpha_trait;
2359   image->fuzz=color->fuzz;
2360   image->depth=color->depth;
2361   status=MagickTrue;
2362   image_view=AcquireAuthenticCacheView(image,exception);
2363 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2364   #pragma omp parallel for schedule(static,4) shared(status) \
2365     magick_threads(image,image,image->rows,1)
2366 #endif
2367   for (y=0; y < (ssize_t) image->rows; y++)
2368   {
2369     register Quantum
2370       *magick_restrict q;
2371
2372     register ssize_t
2373       x;
2374
2375     if (status == MagickFalse)
2376       continue;
2377     q=QueueCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2378     if (q == (Quantum *) NULL)
2379       {
2380         status=MagickFalse;
2381         continue;
2382       }
2383     for (x=0; x < (ssize_t) image->columns; x++)
2384     {
2385       SetPixelViaPixelInfo(image,color,q);
2386       q+=GetPixelChannels(image);
2387     }
2388     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2389       status=MagickFalse;
2390   }
2391   image_view=DestroyCacheView(image_view);
2392   return(status);
2393 }
2394 \f
2395 /*
2396 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2397 %                                                                             %
2398 %                                                                             %
2399 %                                                                             %
2400 %   S e t I m a g e S t o r a g e C l a s s                                   %
2401 %                                                                             %
2402 %                                                                             %
2403 %                                                                             %
2404 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2405 %
2406 %  SetImageStorageClass() sets the image class: DirectClass for true color
2407 %  images or PseudoClass for colormapped images.
2408 %
2409 %  The format of the SetImageStorageClass method is:
2410 %
2411 %      MagickBooleanType SetImageStorageClass(Image *image,
2412 %        const ClassType storage_class,ExceptionInfo *exception)
2413 %
2414 %  A description of each parameter follows:
2415 %
2416 %    o image: the image.
2417 %
2418 %    o storage_class:  The image class.
2419 %
2420 %    o exception: return any errors or warnings in this structure.
2421 %
2422 */
2423 MagickExport MagickBooleanType SetImageStorageClass(Image *image,
2424   const ClassType storage_class,ExceptionInfo *exception)
2425 {
2426   image->storage_class=storage_class;
2427   return(SyncImagePixelCache(image,exception));
2428 }
2429 \f
2430 /*
2431 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2432 %                                                                             %
2433 %                                                                             %
2434 %                                                                             %
2435 %   S e t I m a g e E x t e n t                                               %
2436 %                                                                             %
2437 %                                                                             %
2438 %                                                                             %
2439 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2440 %
2441 %  SetImageExtent() sets the image size (i.e. columns & rows).
2442 %
2443 %  The format of the SetImageExtent method is:
2444 %
2445 %      MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2446 %        const size_t rows,ExceptionInfo *exception)
2447 %
2448 %  A description of each parameter follows:
2449 %
2450 %    o image: the image.
2451 %
2452 %    o columns:  The image width in pixels.
2453 %
2454 %    o rows:  The image height in pixels.
2455 %
2456 %    o exception: return any errors or warnings in this structure.
2457 %
2458 */
2459 MagickExport MagickBooleanType SetImageExtent(Image *image,const size_t columns,
2460   const size_t rows,ExceptionInfo *exception)
2461 {
2462   if ((columns == 0) || (rows == 0))
2463     ThrowBinaryException(ImageError,"NegativeOrZeroImageSize",image->filename);
2464   image->columns=columns;
2465   image->rows=rows;
2466   if (image->depth > (8*sizeof(MagickSizeType)))
2467     ThrowBinaryException(ImageError,"ImageDepthNotSupported",image->filename);
2468   return(SyncImagePixelCache(image,exception));
2469 }
2470 \f
2471 /*
2472 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2473 %                                                                             %
2474 %                                                                             %
2475 %                                                                             %
2476 +   S e t I m a g e I n f o                                                   %
2477 %                                                                             %
2478 %                                                                             %
2479 %                                                                             %
2480 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2481 %
2482 %  SetImageInfo() initializes the 'magick' field of the ImageInfo structure.
2483 %  It is set to a type of image format based on the prefix or suffix of the
2484 %  filename.  For example, 'ps:image' returns PS indicating a Postscript image.
2485 %  JPEG is returned for this filename: 'image.jpg'.  The filename prefix has
2486 %  precendence over the suffix.  Use an optional index enclosed in brackets
2487 %  after a file name to specify a desired scene of a multi-resolution image
2488 %  format like Photo CD (e.g. img0001.pcd[4]).  A True (non-zero) return value
2489 %  indicates success.
2490 %
2491 %  The format of the SetImageInfo method is:
2492 %
2493 %      MagickBooleanType SetImageInfo(ImageInfo *image_info,
2494 %        const unsigned int frames,ExceptionInfo *exception)
2495 %
2496 %  A description of each parameter follows:
2497 %
2498 %    o image_info: the image info.
2499 %
2500 %    o frames: the number of images you intend to write.
2501 %
2502 %    o exception: return any errors or warnings in this structure.
2503 %
2504 */
2505 MagickExport MagickBooleanType SetImageInfo(ImageInfo *image_info,
2506   const unsigned int frames,ExceptionInfo *exception)
2507 {
2508   char
2509     component[MagickPathExtent],
2510     magic[MagickPathExtent],
2511     *q;
2512
2513   const MagicInfo
2514     *magic_info;
2515
2516   const MagickInfo
2517     *magick_info;
2518
2519   ExceptionInfo
2520     *sans_exception;
2521
2522   Image
2523     *image;
2524
2525   MagickBooleanType
2526     status;
2527
2528   register const char
2529     *p;
2530
2531   ssize_t
2532     count;
2533
2534   /*
2535     Look for 'image.format' in filename.
2536   */
2537   assert(image_info != (ImageInfo *) NULL);
2538   assert(image_info->signature == MagickCoreSignature);
2539   if (image_info->debug != MagickFalse)
2540     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2541       image_info->filename);
2542   *component='\0';
2543   GetPathComponent(image_info->filename,SubimagePath,component);
2544   if (*component != '\0')
2545     {
2546       /*
2547         Look for scene specification (e.g. img0001.pcd[4]).
2548       */
2549       if (IsSceneGeometry(component,MagickFalse) == MagickFalse)
2550         {
2551           if (IsGeometry(component) != MagickFalse)
2552             (void) CloneString(&image_info->extract,component);
2553         }
2554       else
2555         {
2556           size_t
2557             first,
2558             last;
2559
2560           (void) CloneString(&image_info->scenes,component);
2561           image_info->scene=StringToUnsignedLong(image_info->scenes);
2562           image_info->number_scenes=image_info->scene;
2563           p=image_info->scenes;
2564           for (q=(char *) image_info->scenes; *q != '\0'; p++)
2565           {
2566             while ((isspace((int) ((unsigned char) *p)) != 0) || (*p == ','))
2567               p++;
2568             first=(size_t) strtol(p,&q,10);
2569             last=first;
2570             while (isspace((int) ((unsigned char) *q)) != 0)
2571               q++;
2572             if (*q == '-')
2573               last=(size_t) strtol(q+1,&q,10);
2574             if (first > last)
2575               Swap(first,last);
2576             if (first < image_info->scene)
2577               image_info->scene=first;
2578             if (last > image_info->number_scenes)
2579               image_info->number_scenes=last;
2580             p=q;
2581           }
2582           image_info->number_scenes-=image_info->scene-1;
2583         }
2584     }
2585   *component='\0';
2586   if (*image_info->magick == '\0')
2587     GetPathComponent(image_info->filename,ExtensionPath,component);
2588 #if defined(MAGICKCORE_ZLIB_DELEGATE)
2589   if (*component != '\0')
2590     if ((LocaleCompare(component,"gz") == 0) ||
2591         (LocaleCompare(component,"Z") == 0) ||
2592         (LocaleCompare(component,"svgz") == 0) ||
2593         (LocaleCompare(component,"wmz") == 0))
2594       {
2595         char
2596           path[MagickPathExtent];
2597
2598         (void) CopyMagickString(path,image_info->filename,MagickPathExtent);
2599         path[strlen(path)-strlen(component)-1]='\0';
2600         GetPathComponent(path,ExtensionPath,component);
2601       }
2602 #endif
2603 #if defined(MAGICKCORE_BZLIB_DELEGATE)
2604   if (*component != '\0')
2605     if (LocaleCompare(component,"bz2") == 0)
2606       {
2607         char
2608           path[MagickPathExtent];
2609
2610         (void) CopyMagickString(path,image_info->filename,MagickPathExtent);
2611         path[strlen(path)-strlen(component)-1]='\0';
2612         GetPathComponent(path,ExtensionPath,component);
2613       }
2614 #endif
2615   image_info->affirm=MagickFalse;
2616   sans_exception=AcquireExceptionInfo();
2617   if (*component != '\0')
2618     {
2619       MagickFormatType
2620         format_type;
2621
2622       register ssize_t
2623         i;
2624
2625       static const char
2626         *format_type_formats[] =
2627         {
2628           "AUTOTRACE",
2629           "BROWSE",
2630           "DCRAW",
2631           "EDIT",
2632           "LAUNCH",
2633           "MPEG:DECODE",
2634           "MPEG:ENCODE",
2635           "PRINT",
2636           "PS:ALPHA",
2637           "PS:CMYK",
2638           "PS:COLOR",
2639           "PS:GRAY",
2640           "PS:MONO",
2641           "SCAN",
2642           "SHOW",
2643           "WIN",
2644           (char *) NULL
2645         };
2646
2647       /*
2648         User specified image format.
2649       */
2650       (void) CopyMagickString(magic,component,MagickPathExtent);
2651       LocaleUpper(magic);
2652       /*
2653         Look for explicit image formats.
2654       */
2655       format_type=UndefinedFormatType;
2656       magick_info=GetMagickInfo(magic,sans_exception);
2657       if ((magick_info != (const MagickInfo *) NULL) &&
2658           (magick_info->format_type != UndefinedFormatType))
2659         format_type=magick_info->format_type;
2660       i=0;
2661       while ((format_type == UndefinedFormatType) &&
2662              (format_type_formats[i] != (char *) NULL))
2663       {
2664         if ((*magic == *format_type_formats[i]) &&
2665             (LocaleCompare(magic,format_type_formats[i]) == 0))
2666           format_type=ExplicitFormatType;
2667         i++;
2668       }
2669       if (format_type == UndefinedFormatType)
2670         (void) CopyMagickString(image_info->magick,magic,MagickPathExtent);
2671       else
2672         if (format_type == ExplicitFormatType)
2673           {
2674             image_info->affirm=MagickTrue;
2675             (void) CopyMagickString(image_info->magick,magic,MagickPathExtent);
2676           }
2677       if (LocaleCompare(magic,"RGB") == 0)
2678         image_info->affirm=MagickFalse;  /* maybe SGI disguised as RGB */
2679     }
2680   /*
2681     Look for explicit 'format:image' in filename.
2682   */
2683   *magic='\0';
2684   GetPathComponent(image_info->filename,MagickPath,magic);
2685   if (*magic == '\0')
2686     {
2687       (void) CopyMagickString(magic,image_info->magick,MagickPathExtent);
2688       magick_info=GetMagickInfo(magic,sans_exception);
2689       GetPathComponent(image_info->filename,CanonicalPath,component);
2690       (void) CopyMagickString(image_info->filename,component,MagickPathExtent);
2691     }
2692   else
2693     {
2694       const DelegateInfo
2695         *delegate_info;
2696
2697       /*
2698         User specified image format.
2699       */
2700       LocaleUpper(magic);
2701       magick_info=GetMagickInfo(magic,sans_exception);
2702       delegate_info=GetDelegateInfo(magic,"*",sans_exception);
2703       if (delegate_info == (const DelegateInfo *) NULL)
2704         delegate_info=GetDelegateInfo("*",magic,sans_exception);
2705       if (((magick_info != (const MagickInfo *) NULL) ||
2706            (delegate_info != (const DelegateInfo *) NULL)) &&
2707           (IsMagickConflict(magic) == MagickFalse))
2708         {
2709           image_info->affirm=MagickTrue;
2710           (void) CopyMagickString(image_info->magick,magic,MagickPathExtent);
2711           GetPathComponent(image_info->filename,CanonicalPath,component);
2712           (void) CopyMagickString(image_info->filename,component,
2713             MagickPathExtent);
2714         }
2715     }
2716   sans_exception=DestroyExceptionInfo(sans_exception);
2717   if ((magick_info == (const MagickInfo *) NULL) ||
2718       (GetMagickEndianSupport(magick_info) == MagickFalse))
2719     image_info->endian=UndefinedEndian;
2720   if ((image_info->adjoin != MagickFalse) && (frames > 1))
2721     {
2722       /*
2723         Test for multiple image support (e.g. image%02d.png).
2724       */
2725       (void) InterpretImageFilename(image_info,(Image *) NULL,
2726         image_info->filename,(int) image_info->scene,component,exception);
2727       if ((LocaleCompare(component,image_info->filename) != 0) &&
2728           (strchr(component,'%') == (char *) NULL))
2729         image_info->adjoin=MagickFalse;
2730     }
2731   if ((image_info->adjoin != MagickFalse) && (frames > 0))
2732     {
2733       /*
2734         Some image formats do not support multiple frames per file.
2735       */
2736       magick_info=GetMagickInfo(magic,exception);
2737       if (magick_info != (const MagickInfo *) NULL)
2738         if (GetMagickAdjoin(magick_info) == MagickFalse)
2739           image_info->adjoin=MagickFalse;
2740     }
2741   if (image_info->affirm != MagickFalse)
2742     return(MagickTrue);
2743   if (frames == 0)
2744     {
2745       unsigned char
2746         *magick;
2747
2748       size_t
2749         magick_size;
2750
2751       /*
2752         Determine the image format from the first few bytes of the file.
2753       */
2754       magick_size=GetMagicPatternExtent(exception);
2755       if (magick_size == 0)
2756         return(MagickFalse);
2757       image=AcquireImage(image_info,exception);
2758       (void) CopyMagickString(image->filename,image_info->filename,
2759         MagickPathExtent);
2760       status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
2761       if (status == MagickFalse)
2762         {
2763           image=DestroyImage(image);
2764           return(MagickFalse);
2765         }
2766       if ((IsBlobSeekable(image) == MagickFalse) ||
2767           (IsBlobExempt(image) != MagickFalse))
2768         {
2769           /*
2770             Copy standard input or pipe to temporary file.
2771           */
2772           *component='\0';
2773           status=ImageToFile(image,component,exception);
2774           (void) CloseBlob(image);
2775           if (status == MagickFalse)
2776             {
2777               image=DestroyImage(image);
2778               return(MagickFalse);
2779             }
2780           SetImageInfoFile(image_info,(FILE *) NULL);
2781           (void) CopyMagickString(image->filename,component,MagickPathExtent);
2782           status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
2783           if (status == MagickFalse)
2784             {
2785               image=DestroyImage(image);
2786               return(MagickFalse);
2787             }
2788           (void) CopyMagickString(image_info->filename,component,
2789             MagickPathExtent);
2790           image_info->temporary=MagickTrue;
2791         }
2792       magick=(unsigned char *) AcquireMagickMemory(magick_size);
2793       if (magick == (unsigned char *) NULL)
2794         {
2795           (void) CloseBlob(image);
2796           image=DestroyImage(image);
2797           return(MagickFalse);
2798         }
2799       (void) ResetMagickMemory(magick,0,magick_size);
2800       count=ReadBlob(image,magick_size,magick);
2801       (void) SeekBlob(image,-((MagickOffsetType) count),SEEK_CUR);
2802       (void) CloseBlob(image);
2803       image=DestroyImage(image);
2804       /*
2805         Check magic.xml configuration file.
2806       */
2807       sans_exception=AcquireExceptionInfo();
2808       magic_info=GetMagicInfo(magick,(size_t) count,sans_exception);
2809       magick=(unsigned char *) RelinquishMagickMemory(magick);
2810       if ((magic_info != (const MagicInfo *) NULL) &&
2811           (GetMagicName(magic_info) != (char *) NULL))
2812         {
2813           /*
2814             Try to use magick_info that was determined earlier by the extension
2815           */
2816           if ((magick_info != (const MagickInfo *) NULL) &&
2817               (GetMagickUseExtension(magick_info) != MagickFalse) &&
2818               (LocaleCompare(magick_info->module,GetMagicName(
2819                 magic_info)) == 0))
2820             (void) CopyMagickString(image_info->magick,magick_info->name,
2821               MagickPathExtent);
2822           else
2823             {
2824               (void) CopyMagickString(image_info->magick,GetMagicName(
2825                 magic_info),MagickPathExtent);
2826               magick_info=GetMagickInfo(image_info->magick,sans_exception);
2827             }
2828           if ((magick_info == (const MagickInfo *) NULL) ||
2829               (GetMagickEndianSupport(magick_info) == MagickFalse))
2830             image_info->endian=UndefinedEndian;
2831           sans_exception=DestroyExceptionInfo(sans_exception);
2832           return(MagickTrue);
2833         }
2834       magick_info=GetMagickInfo(image_info->magick,sans_exception);
2835       if ((magick_info == (const MagickInfo *) NULL) ||
2836           (GetMagickEndianSupport(magick_info) == MagickFalse))
2837         image_info->endian=UndefinedEndian;
2838       sans_exception=DestroyExceptionInfo(sans_exception);
2839     }
2840   return(MagickTrue);
2841 }
2842 \f
2843 /*
2844 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2845 %                                                                             %
2846 %                                                                             %
2847 %                                                                             %
2848 %   S e t I m a g e I n f o B l o b                                           %
2849 %                                                                             %
2850 %                                                                             %
2851 %                                                                             %
2852 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2853 %
2854 %  SetImageInfoBlob() sets the image info blob member.
2855 %
2856 %  The format of the SetImageInfoBlob method is:
2857 %
2858 %      void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
2859 %        const size_t length)
2860 %
2861 %  A description of each parameter follows:
2862 %
2863 %    o image_info: the image info.
2864 %
2865 %    o blob: the blob.
2866 %
2867 %    o length: the blob length.
2868 %
2869 */
2870 MagickExport void SetImageInfoBlob(ImageInfo *image_info,const void *blob,
2871   const size_t length)
2872 {
2873   assert(image_info != (ImageInfo *) NULL);
2874   assert(image_info->signature == MagickCoreSignature);
2875   if (image_info->debug != MagickFalse)
2876     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2877       image_info->filename);
2878   image_info->blob=(void *) blob;
2879   image_info->length=length;
2880 }
2881 \f
2882 /*
2883 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2884 %                                                                             %
2885 %                                                                             %
2886 %                                                                             %
2887 %   S e t I m a g e I n f o F i l e                                           %
2888 %                                                                             %
2889 %                                                                             %
2890 %                                                                             %
2891 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2892 %
2893 %  SetImageInfoFile() sets the image info file member.
2894 %
2895 %  The format of the SetImageInfoFile method is:
2896 %
2897 %      void SetImageInfoFile(ImageInfo *image_info,FILE *file)
2898 %
2899 %  A description of each parameter follows:
2900 %
2901 %    o image_info: the image info.
2902 %
2903 %    o file: the file.
2904 %
2905 */
2906 MagickExport void SetImageInfoFile(ImageInfo *image_info,FILE *file)
2907 {
2908   assert(image_info != (ImageInfo *) NULL);
2909   assert(image_info->signature == MagickCoreSignature);
2910   if (image_info->debug != MagickFalse)
2911     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
2912       image_info->filename);
2913   image_info->file=file;
2914 }
2915 \f
2916 /*
2917 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2918 %                                                                             %
2919 %                                                                             %
2920 %                                                                             %
2921 %     S e t I m a g e A l p h a                                               %
2922 %                                                                             %
2923 %                                                                             %
2924 %                                                                             %
2925 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2926 %
2927 %  SetImageAlpha() sets the alpha levels of the image.
2928 %
2929 %  The format of the SetImageAlpha method is:
2930 %
2931 %      MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
2932 %        ExceptionInfo *exception)
2933 %
2934 %  A description of each parameter follows:
2935 %
2936 %    o image: the image.
2937 %
2938 %    o Alpha: the level of transparency: 0 is fully opaque and QuantumRange is
2939 %      fully transparent.
2940 %
2941 */
2942 MagickExport MagickBooleanType SetImageAlpha(Image *image,const Quantum alpha,
2943   ExceptionInfo *exception)
2944 {
2945   CacheView
2946     *image_view;
2947
2948   MagickBooleanType
2949     status;
2950
2951   ssize_t
2952     y;
2953
2954   assert(image != (Image *) NULL);
2955   if (image->debug != MagickFalse)
2956     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
2957   assert(image->signature == MagickCoreSignature);
2958   image->alpha_trait=BlendPixelTrait;
2959   status=MagickTrue;
2960   image_view=AcquireAuthenticCacheView(image,exception);
2961 #if defined(MAGICKCORE_OPENMP_SUPPORT)
2962   #pragma omp parallel for schedule(static,4) shared(status) \
2963     magick_threads(image,image,image->rows,1)
2964 #endif
2965   for (y=0; y < (ssize_t) image->rows; y++)
2966   {
2967     register Quantum
2968       *magick_restrict q;
2969
2970     register ssize_t
2971       x;
2972
2973     if (status == MagickFalse)
2974       continue;
2975     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
2976     if (q == (Quantum *) NULL)
2977       {
2978         status=MagickFalse;
2979         continue;
2980       }
2981     for (x=0; x < (ssize_t) image->columns; x++)
2982     {
2983       if (GetPixelWriteMask(image,q) != 0)
2984         SetPixelAlpha(image,alpha,q);
2985       q+=GetPixelChannels(image);
2986     }
2987     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
2988       status=MagickFalse;
2989   }
2990   image_view=DestroyCacheView(image_view);
2991   return(status);
2992 }
2993 \f
2994 /*
2995 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
2996 %                                                                             %
2997 %                                                                             %
2998 %                                                                             %
2999 %   S e t I m a g e M a s k                                                   %
3000 %                                                                             %
3001 %                                                                             %
3002 %                                                                             %
3003 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3004 %
3005 %  SetImageMask() associates a mask with the image.  The mask must be the same
3006 %  dimensions as the image.
3007 %
3008 %  The format of the SetImageMask method is:
3009 %
3010 %      MagickBooleanType SetImageMask(Image *image,const PixelMask type,
3011 %        const Image *mask,ExceptionInfo *exception)
3012 %
3013 %  A description of each parameter follows:
3014 %
3015 %    o image: the image.
3016 %
3017 %    o type: the mask type, ReadPixelMask or WritePixelMask.
3018 %
3019 %    o mask: the image mask.
3020 %
3021 %    o exception: return any errors or warnings in this structure.
3022 %
3023 */
3024 MagickExport MagickBooleanType SetImageMask(Image *image,const PixelMask type,
3025   const Image *mask,ExceptionInfo *exception)
3026 {
3027   CacheView
3028     *mask_view,
3029     *image_view;
3030
3031   MagickBooleanType
3032     status;
3033
3034   ssize_t
3035     y;
3036
3037   /*
3038     Set image mask.
3039   */
3040   assert(image != (Image *) NULL);
3041   if (image->debug != MagickFalse)
3042     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3043   assert(image->signature == MagickCoreSignature);
3044   if (mask == (const Image *) NULL)
3045     {
3046       switch (type)
3047       {
3048         case WritePixelMask: image->write_mask=MagickFalse; break;
3049         default: image->read_mask=MagickFalse; break;
3050       }
3051       return(SyncImagePixelCache(image,exception));
3052     }
3053   switch (type)
3054   {
3055     case WritePixelMask: image->write_mask=MagickTrue; break;
3056     default: image->read_mask=MagickTrue; break;
3057   }
3058   if (SyncImagePixelCache(image,exception) == MagickFalse)
3059     return(MagickFalse);
3060   status=MagickTrue;
3061   mask_view=AcquireVirtualCacheView(mask,exception);
3062   image_view=AcquireAuthenticCacheView(image,exception);
3063 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3064   #pragma omp parallel for schedule(static,4) shared(status) \
3065     magick_threads(mask,image,1,1)
3066 #endif
3067   for (y=0; y < (ssize_t) image->rows; y++)
3068   {
3069     register const Quantum
3070       *magick_restrict p;
3071
3072     register Quantum
3073       *magick_restrict q;
3074
3075     register ssize_t
3076       x;
3077
3078     if (status == MagickFalse)
3079       continue;
3080     p=GetCacheViewVirtualPixels(mask_view,0,y,mask->columns,1,exception);
3081     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3082     if ((p == (const Quantum *) NULL) || (q == (Quantum *) NULL))
3083       {
3084         status=MagickFalse;
3085         continue;
3086       }
3087     for (x=0; x < (ssize_t) image->columns; x++)
3088     {
3089       MagickRealType
3090         intensity;
3091
3092       intensity=0;
3093       if ((x < (ssize_t) mask->columns) && (y < (ssize_t) mask->rows))
3094         intensity=GetPixelIntensity(mask,p);
3095       switch (type)
3096       {
3097         case WritePixelMask:
3098         {
3099           SetPixelWriteMask(image,ClampToQuantum(intensity),q);
3100           break;
3101         }
3102         default:
3103         {
3104           SetPixelReadMask(image,ClampToQuantum(intensity),q);
3105           break;
3106         }
3107       }
3108       p+=GetPixelChannels(mask);
3109       q+=GetPixelChannels(image);
3110     }
3111     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
3112       status=MagickFalse;
3113   }
3114   mask_view=DestroyCacheView(mask_view);
3115   image_view=DestroyCacheView(image_view);
3116   return(status);
3117 }
3118 \f
3119 /*
3120 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3121 %                                                                             %
3122 %                                                                             %
3123 %                                                                             %
3124 %   S e t I m a g e R e g i o n M a s k                                       %
3125 %                                                                             %
3126 %                                                                             %
3127 %                                                                             %
3128 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3129 %
3130 %  SetImageRegionMask() associates a mask with the image as defined by the
3131 %  specified region.
3132 %
3133 %  The format of the SetImageRegionMask method is:
3134 %
3135 %      MagickBooleanType SetImageRegionMask(Image *image,const PixelMask type,
3136 %        const RectangleInfo *region,ExceptionInfo *exception)
3137 %
3138 %  A description of each parameter follows:
3139 %
3140 %    o image: the image.
3141 %
3142 %    o type: the mask type, ReadPixelMask or WritePixelMask.
3143 %
3144 %    o geometry: the mask region.
3145 %
3146 %    o exception: return any errors or warnings in this structure.
3147 %
3148 */
3149 MagickExport MagickBooleanType SetImageRegionMask(Image *image,
3150   const PixelMask type,const RectangleInfo *region,ExceptionInfo *exception)
3151 {
3152   CacheView
3153     *image_view;
3154
3155   MagickBooleanType
3156     status;
3157
3158   ssize_t
3159     y;
3160
3161   /*
3162     Set image mask as defined by the region.
3163   */
3164   assert(image != (Image *) NULL);
3165   if (image->debug != MagickFalse)
3166     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3167   assert(image->signature == MagickCoreSignature);
3168   if (region == (const RectangleInfo *) NULL)
3169     {
3170       switch (type)
3171       {
3172         case WritePixelMask: image->write_mask=MagickFalse; break;
3173         default: image->read_mask=MagickFalse; break;
3174       }
3175       return(SyncImagePixelCache(image,exception));
3176     }
3177   switch (type)
3178   {
3179     case WritePixelMask: image->write_mask=MagickTrue; break;
3180     default: image->read_mask=MagickTrue; break;
3181   }
3182   if (SyncImagePixelCache(image,exception) == MagickFalse)
3183     return(MagickFalse);
3184   status=MagickTrue;
3185   image_view=AcquireAuthenticCacheView(image,exception);
3186 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3187   #pragma omp parallel for schedule(static,4) shared(status) \
3188     magick_threads(image,image,1,1)
3189 #endif
3190   for (y=0; y < (ssize_t) image->rows; y++)
3191   {
3192     register Quantum
3193       *magick_restrict q;
3194
3195     register ssize_t
3196       x;
3197
3198     if (status == MagickFalse)
3199       continue;
3200     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3201     if (q == (Quantum *) NULL)
3202       {
3203         status=MagickFalse;
3204         continue;
3205       }
3206     for (x=0; x < (ssize_t) image->columns; x++)
3207     {
3208       Quantum
3209         pixel;
3210
3211       pixel=0;
3212       if (((x >= region->x) && (x < (region->x+region->width))) &&
3213           ((y >= region->y) && (y < (region->y+region->height))))
3214         pixel=QuantumRange;
3215       switch (type)
3216       {
3217         case WritePixelMask:
3218         {
3219           SetPixelWriteMask(image,pixel,q);
3220           break;
3221         }
3222         default:
3223         {
3224           SetPixelReadMask(image,pixel,q);
3225           break;
3226         }
3227       }
3228       q+=GetPixelChannels(image);
3229     }
3230     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
3231       status=MagickFalse;
3232   }
3233   image_view=DestroyCacheView(image_view);
3234   return(status);
3235 }
3236 \f
3237 /*
3238 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3239 %                                                                             %
3240 %                                                                             %
3241 %                                                                             %
3242 %   S e t I m a g e V i r t u a l P i x e l M e t h o d                       %
3243 %                                                                             %
3244 %                                                                             %
3245 %                                                                             %
3246 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3247 %
3248 %  SetImageVirtualPixelMethod() sets the "virtual pixels" method for the
3249 %  image and returns the previous setting.  A virtual pixel is any pixel access
3250 %  that is outside the boundaries of the image cache.
3251 %
3252 %  The format of the SetImageVirtualPixelMethod() method is:
3253 %
3254 %      VirtualPixelMethod SetImageVirtualPixelMethod(Image *image,
3255 %        const VirtualPixelMethod virtual_pixel_method,ExceptionInfo *exception)
3256 %
3257 %  A description of each parameter follows:
3258 %
3259 %    o image: the image.
3260 %
3261 %    o virtual_pixel_method: choose the type of virtual pixel.
3262 %
3263 %    o exception: return any errors or warnings in this structure.
3264 %
3265 */
3266 MagickExport VirtualPixelMethod SetImageVirtualPixelMethod(Image *image,
3267   const VirtualPixelMethod virtual_pixel_method,ExceptionInfo *exception)
3268 {
3269   assert(image != (const Image *) NULL);
3270   assert(image->signature == MagickCoreSignature);
3271   if (image->debug != MagickFalse)
3272     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3273   return(SetPixelCacheVirtualMethod(image,virtual_pixel_method,exception));
3274 }
3275 \f
3276 /*
3277 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3278 %                                                                             %
3279 %                                                                             %
3280 %                                                                             %
3281 %     S m u s h I m a g e s                                                   %
3282 %                                                                             %
3283 %                                                                             %
3284 %                                                                             %
3285 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3286 %
3287 %  SmushImages() takes all images from the current image pointer to the end
3288 %  of the image list and smushes them to each other top-to-bottom if the
3289 %  stack parameter is true, otherwise left-to-right.
3290 %
3291 %  The current gravity setting now effects how the image is justified in the
3292 %  final image.
3293 %
3294 %  The format of the SmushImages method is:
3295 %
3296 %      Image *SmushImages(const Image *images,const MagickBooleanType stack,
3297 %        ExceptionInfo *exception)
3298 %
3299 %  A description of each parameter follows:
3300 %
3301 %    o images: the image sequence.
3302 %
3303 %    o stack: A value other than 0 stacks the images top-to-bottom.
3304 %
3305 %    o offset: minimum distance in pixels between images.
3306 %
3307 %    o exception: return any errors or warnings in this structure.
3308 %
3309 */
3310
3311 static ssize_t SmushXGap(const Image *smush_image,const Image *images,
3312   const ssize_t offset,ExceptionInfo *exception)
3313 {
3314   CacheView
3315     *left_view,
3316     *right_view;
3317
3318   const Image
3319     *left_image,
3320     *right_image;
3321
3322   RectangleInfo
3323     left_geometry,
3324     right_geometry;
3325
3326   register const Quantum
3327     *p;
3328
3329   register ssize_t
3330     i,
3331     y;
3332
3333   size_t
3334     gap;
3335
3336   ssize_t
3337     x;
3338
3339   if (images->previous == (Image *) NULL)
3340     return(0);
3341   right_image=images;
3342   SetGeometry(smush_image,&right_geometry);
3343   GravityAdjustGeometry(right_image->columns,right_image->rows,
3344     right_image->gravity,&right_geometry);
3345   left_image=images->previous;
3346   SetGeometry(smush_image,&left_geometry);
3347   GravityAdjustGeometry(left_image->columns,left_image->rows,
3348     left_image->gravity,&left_geometry);
3349   gap=right_image->columns;
3350   left_view=AcquireVirtualCacheView(left_image,exception);
3351   right_view=AcquireVirtualCacheView(right_image,exception);
3352   for (y=0; y < (ssize_t) smush_image->rows; y++)
3353   {
3354     for (x=(ssize_t) left_image->columns-1; x > 0; x--)
3355     {
3356       p=GetCacheViewVirtualPixels(left_view,x,left_geometry.y+y,1,1,exception);
3357       if ((p == (const Quantum *) NULL) ||
3358           (GetPixelAlpha(left_image,p) != TransparentAlpha) ||
3359           ((left_image->columns-x-1) >= gap))
3360         break;
3361     }
3362     i=(ssize_t) left_image->columns-x-1;
3363     for (x=0; x < (ssize_t) right_image->columns; x++)
3364     {
3365       p=GetCacheViewVirtualPixels(right_view,x,right_geometry.y+y,1,1,
3366         exception);
3367       if ((p == (const Quantum *) NULL) ||
3368           (GetPixelAlpha(right_image,p) != TransparentAlpha) ||
3369           ((x+i) >= (ssize_t) gap))
3370         break;
3371     }
3372     if ((x+i) < (ssize_t) gap)
3373       gap=(size_t) (x+i);
3374   }
3375   right_view=DestroyCacheView(right_view);
3376   left_view=DestroyCacheView(left_view);
3377   if (y < (ssize_t) smush_image->rows)
3378     return(offset);
3379   return((ssize_t) gap-offset);
3380 }
3381
3382 static ssize_t SmushYGap(const Image *smush_image,const Image *images,
3383   const ssize_t offset,ExceptionInfo *exception)
3384 {
3385   CacheView
3386     *bottom_view,
3387     *top_view;
3388
3389   const Image
3390     *bottom_image,
3391     *top_image;
3392
3393   RectangleInfo
3394     bottom_geometry,
3395     top_geometry;
3396
3397   register const Quantum
3398     *p;
3399
3400   register ssize_t
3401     i,
3402     x;
3403
3404   size_t
3405     gap;
3406
3407   ssize_t
3408     y;
3409
3410   if (images->previous == (Image *) NULL)
3411     return(0);
3412   bottom_image=images;
3413   SetGeometry(smush_image,&bottom_geometry);
3414   GravityAdjustGeometry(bottom_image->columns,bottom_image->rows,
3415     bottom_image->gravity,&bottom_geometry);
3416   top_image=images->previous;
3417   SetGeometry(smush_image,&top_geometry);
3418   GravityAdjustGeometry(top_image->columns,top_image->rows,top_image->gravity,
3419     &top_geometry);
3420   gap=bottom_image->rows;
3421   top_view=AcquireVirtualCacheView(top_image,exception);
3422   bottom_view=AcquireVirtualCacheView(bottom_image,exception);
3423   for (x=0; x < (ssize_t) smush_image->columns; x++)
3424   {
3425     for (y=(ssize_t) top_image->rows-1; y > 0; y--)
3426     {
3427       p=GetCacheViewVirtualPixels(top_view,top_geometry.x+x,y,1,1,exception);
3428       if ((p == (const Quantum *) NULL) ||
3429           (GetPixelAlpha(top_image,p) != TransparentAlpha) ||
3430           ((top_image->rows-y-1) >= gap))
3431         break;
3432     }
3433     i=(ssize_t) top_image->rows-y-1;
3434     for (y=0; y < (ssize_t) bottom_image->rows; y++)
3435     {
3436       p=GetCacheViewVirtualPixels(bottom_view,bottom_geometry.x+x,y,1,1,
3437         exception);
3438       if ((p == (const Quantum *) NULL) ||
3439           (GetPixelAlpha(bottom_image,p) != TransparentAlpha) ||
3440           ((y+i) >= (ssize_t) gap))
3441         break;
3442     }
3443     if ((y+i) < (ssize_t) gap)
3444       gap=(size_t) (y+i);
3445   }
3446   bottom_view=DestroyCacheView(bottom_view);
3447   top_view=DestroyCacheView(top_view);
3448   if (x < (ssize_t) smush_image->columns)
3449     return(offset);
3450   return((ssize_t) gap-offset);
3451 }
3452
3453 MagickExport Image *SmushImages(const Image *images,
3454   const MagickBooleanType stack,const ssize_t offset,ExceptionInfo *exception)
3455 {
3456 #define SmushImageTag  "Smush/Image"
3457
3458   const Image
3459     *image;
3460
3461   Image
3462     *smush_image;
3463
3464   MagickBooleanType
3465     proceed,
3466     status;
3467
3468   MagickOffsetType
3469     n;
3470
3471   PixelTrait
3472     alpha_trait;
3473
3474   RectangleInfo
3475     geometry;
3476
3477   register const Image
3478     *next;
3479
3480   size_t
3481     height,
3482     number_images,
3483     width;
3484
3485   ssize_t
3486     x_offset,
3487     y_offset;
3488
3489   /*
3490     Compute maximum area of smushed area.
3491   */
3492   assert(images != (Image *) NULL);
3493   assert(images->signature == MagickCoreSignature);
3494   if (images->debug != MagickFalse)
3495     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
3496   assert(exception != (ExceptionInfo *) NULL);
3497   assert(exception->signature == MagickCoreSignature);
3498   image=images;
3499   alpha_trait=image->alpha_trait;
3500   number_images=1;
3501   width=image->columns;
3502   height=image->rows;
3503   next=GetNextImageInList(image);
3504   for ( ; next != (Image *) NULL; next=GetNextImageInList(next))
3505   {
3506     if (next->alpha_trait != UndefinedPixelTrait)
3507       alpha_trait=BlendPixelTrait;
3508     number_images++;
3509     if (stack != MagickFalse)
3510       {
3511         if (next->columns > width)
3512           width=next->columns;
3513         height+=next->rows;
3514         if (next->previous != (Image *) NULL)
3515           height+=offset;
3516         continue;
3517       }
3518     width+=next->columns;
3519     if (next->previous != (Image *) NULL)
3520       width+=offset;
3521     if (next->rows > height)
3522       height=next->rows;
3523   }
3524   /*
3525     Smush images.
3526   */
3527   smush_image=CloneImage(image,width,height,MagickTrue,exception);
3528   if (smush_image == (Image *) NULL)
3529     return((Image *) NULL);
3530   if (SetImageStorageClass(smush_image,DirectClass,exception) == MagickFalse)
3531     {
3532       smush_image=DestroyImage(smush_image);
3533       return((Image *) NULL);
3534     }
3535   smush_image->alpha_trait=alpha_trait;
3536   (void) SetImageBackgroundColor(smush_image,exception);
3537   status=MagickTrue;
3538   x_offset=0;
3539   y_offset=0;
3540   for (n=0; n < (MagickOffsetType) number_images; n++)
3541   {
3542     SetGeometry(smush_image,&geometry);
3543     GravityAdjustGeometry(image->columns,image->rows,image->gravity,&geometry);
3544     if (stack != MagickFalse)
3545       {
3546         x_offset-=geometry.x;
3547         y_offset-=SmushYGap(smush_image,image,offset,exception);
3548       }
3549     else
3550       {
3551         x_offset-=SmushXGap(smush_image,image,offset,exception);
3552         y_offset-=geometry.y;
3553       }
3554     status=CompositeImage(smush_image,image,OverCompositeOp,MagickTrue,x_offset,
3555       y_offset,exception);
3556     proceed=SetImageProgress(image,SmushImageTag,n,number_images);
3557     if (proceed == MagickFalse)
3558       break;
3559     if (stack == MagickFalse)
3560       {
3561         x_offset+=(ssize_t) image->columns;
3562         y_offset=0;
3563       }
3564     else
3565       {
3566         x_offset=0;
3567         y_offset+=(ssize_t) image->rows;
3568       }
3569     image=GetNextImageInList(image);
3570   }
3571   if (stack == MagickFalse)
3572     smush_image->columns=(size_t) x_offset;
3573   else
3574     smush_image->rows=(size_t) y_offset;
3575   if (status == MagickFalse)
3576     smush_image=DestroyImage(smush_image);
3577   return(smush_image);
3578 }
3579 \f
3580 /*
3581 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3582 %                                                                             %
3583 %                                                                             %
3584 %                                                                             %
3585 %   S t r i p I m a g e                                                       %
3586 %                                                                             %
3587 %                                                                             %
3588 %                                                                             %
3589 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3590 %
3591 %  StripImage() strips an image of all profiles and comments.
3592 %
3593 %  The format of the StripImage method is:
3594 %
3595 %      MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3596 %
3597 %  A description of each parameter follows:
3598 %
3599 %    o image: the image.
3600 %
3601 %    o exception: return any errors or warnings in this structure.
3602 %
3603 */
3604 MagickExport MagickBooleanType StripImage(Image *image,ExceptionInfo *exception)
3605 {
3606   MagickBooleanType
3607     status;
3608
3609   assert(image != (Image *) NULL);
3610   if (image->debug != MagickFalse)
3611     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3612   (void) exception;
3613   DestroyImageProfiles(image);
3614   (void) DeleteImageProperty(image,"comment");
3615   (void) DeleteImageProperty(image,"date:create");
3616   (void) DeleteImageProperty(image,"date:modify");
3617   status=SetImageArtifact(image,"png:exclude-chunk",
3618     "bKGD,cHRM,EXIF,gAMA,iCCP,iTXt,sRGB,tEXt,zCCP,zTXt,date");
3619   return(status);
3620 }
3621 \f
3622 /*
3623 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3624 %                                                                             %
3625 %                                                                             %
3626 %                                                                             %
3627 +   S y n c I m a g e                                                         %
3628 %                                                                             %
3629 %                                                                             %
3630 %                                                                             %
3631 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3632 %
3633 %  SyncImage() initializes the red, green, and blue intensities of each pixel
3634 %  as defined by the colormap index.
3635 %
3636 %  The format of the SyncImage method is:
3637 %
3638 %      MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3639 %
3640 %  A description of each parameter follows:
3641 %
3642 %    o image: the image.
3643 %
3644 %    o exception: return any errors or warnings in this structure.
3645 %
3646 */
3647
3648 static inline Quantum PushColormapIndex(Image *image,const Quantum index,
3649   MagickBooleanType *range_exception)
3650 {
3651   if ((size_t) index < image->colors)
3652     return(index);
3653   *range_exception=MagickTrue;
3654   return((Quantum) 0);
3655 }
3656
3657 MagickExport MagickBooleanType SyncImage(Image *image,ExceptionInfo *exception)
3658 {
3659   CacheView
3660     *image_view;
3661
3662   MagickBooleanType
3663     range_exception,
3664     status,
3665     taint;
3666
3667   ssize_t
3668     y;
3669
3670   assert(image != (Image *) NULL);
3671   if (image->debug != MagickFalse)
3672     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
3673   assert(image->signature == MagickCoreSignature);
3674   if (image->storage_class == DirectClass)
3675     return(MagickFalse);
3676   range_exception=MagickFalse;
3677   status=MagickTrue;
3678   taint=image->taint;
3679   image_view=AcquireAuthenticCacheView(image,exception);
3680 #if defined(MAGICKCORE_OPENMP_SUPPORT)
3681   #pragma omp parallel for schedule(static,4) shared(range_exception,status) \
3682     magick_threads(image,image,image->rows,1)
3683 #endif
3684   for (y=0; y < (ssize_t) image->rows; y++)
3685   {
3686     Quantum
3687       index;
3688
3689     register Quantum
3690       *magick_restrict q;
3691
3692     register ssize_t
3693       x;
3694
3695     if (status == MagickFalse)
3696       continue;
3697     q=GetCacheViewAuthenticPixels(image_view,0,y,image->columns,1,exception);
3698     if (q == (Quantum *) NULL)
3699       {
3700         status=MagickFalse;
3701         continue;
3702       }
3703     for (x=0; x < (ssize_t) image->columns; x++)
3704     {
3705       index=PushColormapIndex(image,GetPixelIndex(image,q),&range_exception);
3706       SetPixelViaPixelInfo(image,image->colormap+(ssize_t) index,q);
3707       q+=GetPixelChannels(image);
3708     }
3709     if (SyncCacheViewAuthenticPixels(image_view,exception) == MagickFalse)
3710       status=MagickFalse;
3711   }
3712   image_view=DestroyCacheView(image_view);
3713   image->taint=taint;
3714   if ((image->ping == MagickFalse) && (range_exception != MagickFalse))
3715     (void) ThrowMagickException(exception,GetMagickModule(),
3716       CorruptImageWarning,"InvalidColormapIndex","`%s'",image->filename);
3717   return(status);
3718 }
3719 \f
3720 /*
3721 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3722 %                                                                             %
3723 %                                                                             %
3724 %                                                                             %
3725 %   S y n c I m a g e S e t t i n g s                                         %
3726 %                                                                             %
3727 %                                                                             %
3728 %                                                                             %
3729 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3730 %
3731 %  SyncImageSettings() syncs any image_info global options into per-image
3732 %  attributes.
3733 %
3734 %  Note: in IMv6 free form 'options' were always mapped into 'artifacts', so
3735 %  that operations and coders can find such settings.  In IMv7 if a desired
3736 %  per-image artifact is not set, then it will directly look for a global
3737 %  option as a fallback, as such this copy is no longer needed, only the
3738 %  link set up.
3739 %
3740 %  The format of the SyncImageSettings method is:
3741 %
3742 %      MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
3743 %        Image *image,ExceptionInfo *exception)
3744 %      MagickBooleanType SyncImagesSettings(const ImageInfo *image_info,
3745 %        Image *image,ExceptionInfo *exception)
3746 %
3747 %  A description of each parameter follows:
3748 %
3749 %    o image_info: the image info.
3750 %
3751 %    o image: the image.
3752 %
3753 %    o exception: return any errors or warnings in this structure.
3754 %
3755 */
3756
3757 MagickExport MagickBooleanType SyncImagesSettings(ImageInfo *image_info,
3758   Image *images,ExceptionInfo *exception)
3759 {
3760   Image
3761     *image;
3762
3763   assert(image_info != (const ImageInfo *) NULL);
3764   assert(image_info->signature == MagickCoreSignature);
3765   assert(images != (Image *) NULL);
3766   assert(images->signature == MagickCoreSignature);
3767   if (images->debug != MagickFalse)
3768     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",images->filename);
3769   image=images;
3770   for ( ; image != (Image *) NULL; image=GetNextImageInList(image))
3771     (void) SyncImageSettings(image_info,image,exception);
3772   (void) DeleteImageOption(image_info,"page");
3773   return(MagickTrue);
3774 }
3775
3776 MagickExport MagickBooleanType SyncImageSettings(const ImageInfo *image_info,
3777   Image *image,ExceptionInfo *exception)
3778 {
3779   const char
3780     *option;
3781
3782   GeometryInfo
3783     geometry_info;
3784
3785   MagickStatusType
3786     flags;
3787
3788   ResolutionType
3789     units;
3790
3791   /*
3792     Sync image options.
3793   */
3794   assert(image_info != (const ImageInfo *) NULL);
3795   assert(image_info->signature == MagickCoreSignature);
3796   assert(image != (Image *) NULL);
3797   assert(image->signature == MagickCoreSignature);
3798   if (image->debug != MagickFalse)
3799     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
3800   option=GetImageOption(image_info,"alpha-color");
3801   if (option != (const char *) NULL)
3802     (void) QueryColorCompliance(option,AllCompliance,&image->alpha_color,
3803       exception);
3804   option=GetImageOption(image_info,"background");
3805   if (option != (const char *) NULL)
3806     (void) QueryColorCompliance(option,AllCompliance,&image->background_color,
3807       exception);
3808   option=GetImageOption(image_info,"black-point-compensation");
3809   if (option != (const char *) NULL)
3810     image->black_point_compensation=(MagickBooleanType) ParseCommandOption(
3811       MagickBooleanOptions,MagickFalse,option);
3812   option=GetImageOption(image_info,"blue-primary");
3813   if (option != (const char *) NULL)
3814     {
3815       flags=ParseGeometry(option,&geometry_info);
3816       image->chromaticity.blue_primary.x=geometry_info.rho;
3817       image->chromaticity.blue_primary.y=geometry_info.sigma;
3818       if ((flags & SigmaValue) == 0)
3819         image->chromaticity.blue_primary.y=image->chromaticity.blue_primary.x;
3820     }
3821   option=GetImageOption(image_info,"bordercolor");
3822   if (option != (const char *) NULL)
3823     (void) QueryColorCompliance(option,AllCompliance,&image->border_color,
3824       exception);
3825   /* FUTURE: do not sync compose to per-image compose setting here */
3826   option=GetImageOption(image_info,"compose");
3827   if (option != (const char *) NULL)
3828     image->compose=(CompositeOperator) ParseCommandOption(MagickComposeOptions,
3829       MagickFalse,option);
3830   /* -- */
3831   option=GetImageOption(image_info,"compress");
3832   if (option != (const char *) NULL)
3833     image->compression=(CompressionType) ParseCommandOption(
3834       MagickCompressOptions,MagickFalse,option);
3835   option=GetImageOption(image_info,"debug");
3836   if (option != (const char *) NULL)
3837     image->debug=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
3838       MagickFalse,option);
3839   option=GetImageOption(image_info,"density");
3840   if (option != (const char *) NULL)
3841     {
3842       flags=ParseGeometry(option,&geometry_info);
3843       image->resolution.x=geometry_info.rho;
3844       image->resolution.y=geometry_info.sigma;
3845       if ((flags & SigmaValue) == 0)
3846         image->resolution.y=image->resolution.x;
3847     }
3848   option=GetImageOption(image_info,"depth");
3849   if (option != (const char *) NULL)
3850     image->depth=StringToUnsignedLong(option);
3851   option=GetImageOption(image_info,"endian");
3852   if (option != (const char *) NULL)
3853     image->endian=(EndianType) ParseCommandOption(MagickEndianOptions,
3854       MagickFalse,option);
3855   option=GetImageOption(image_info,"filter");
3856   if (option != (const char *) NULL)
3857     image->filter=(FilterType) ParseCommandOption(MagickFilterOptions,
3858       MagickFalse,option);
3859   option=GetImageOption(image_info,"fuzz");
3860   if (option != (const char *) NULL)
3861     image->fuzz=StringToDoubleInterval(option,(double) QuantumRange+1.0);
3862   option=GetImageOption(image_info,"gravity");
3863   if (option != (const char *) NULL)
3864     image->gravity=(GravityType) ParseCommandOption(MagickGravityOptions,
3865       MagickFalse,option);
3866   option=GetImageOption(image_info,"green-primary");
3867   if (option != (const char *) NULL)
3868     {
3869       flags=ParseGeometry(option,&geometry_info);
3870       image->chromaticity.green_primary.x=geometry_info.rho;
3871       image->chromaticity.green_primary.y=geometry_info.sigma;
3872       if ((flags & SigmaValue) == 0)
3873         image->chromaticity.green_primary.y=image->chromaticity.green_primary.x;
3874     }
3875   option=GetImageOption(image_info,"intent");
3876   if (option != (const char *) NULL)
3877     image->rendering_intent=(RenderingIntent) ParseCommandOption(
3878       MagickIntentOptions,MagickFalse,option);
3879   option=GetImageOption(image_info,"intensity");
3880   if (option != (const char *) NULL)
3881     image->intensity=(PixelIntensityMethod) ParseCommandOption(
3882       MagickPixelIntensityOptions,MagickFalse,option);
3883   option=GetImageOption(image_info,"interlace");
3884   if (option != (const char *) NULL)
3885     image->interlace=(InterlaceType) ParseCommandOption(MagickInterlaceOptions,
3886       MagickFalse,option);
3887   option=GetImageOption(image_info,"interpolate");
3888   if (option != (const char *) NULL)
3889     image->interpolate=(PixelInterpolateMethod) ParseCommandOption(
3890       MagickInterpolateOptions,MagickFalse,option);
3891   option=GetImageOption(image_info,"loop");
3892   if (option != (const char *) NULL)
3893     image->iterations=StringToUnsignedLong(option);
3894   option=GetImageOption(image_info,"orient");
3895   if (option != (const char *) NULL)
3896     image->orientation=(OrientationType) ParseCommandOption(
3897       MagickOrientationOptions,MagickFalse,option);
3898   option=GetImageOption(image_info,"page");
3899   if (option != (const char *) NULL)
3900     {
3901       char
3902         *geometry;
3903
3904       geometry=GetPageGeometry(option);
3905       flags=ParseAbsoluteGeometry(geometry,&image->page);
3906       geometry=DestroyString(geometry);
3907     }
3908   option=GetImageOption(image_info,"quality");
3909   if (option != (const char *) NULL)
3910     image->quality=StringToUnsignedLong(option);
3911   option=GetImageOption(image_info,"red-primary");
3912   if (option != (const char *) NULL)
3913     {
3914       flags=ParseGeometry(option,&geometry_info);
3915       image->chromaticity.red_primary.x=geometry_info.rho;
3916       image->chromaticity.red_primary.y=geometry_info.sigma;
3917       if ((flags & SigmaValue) == 0)
3918         image->chromaticity.red_primary.y=image->chromaticity.red_primary.x;
3919     }
3920   if (image_info->quality != UndefinedCompressionQuality)
3921     image->quality=image_info->quality;
3922   option=GetImageOption(image_info,"scene");
3923   if (option != (const char *) NULL)
3924     image->scene=StringToUnsignedLong(option);
3925   option=GetImageOption(image_info,"taint");
3926   if (option != (const char *) NULL)
3927     image->taint=(MagickBooleanType) ParseCommandOption(MagickBooleanOptions,
3928       MagickFalse,option);
3929   option=GetImageOption(image_info,"tile-offset");
3930   if (option != (const char *) NULL)
3931     {
3932       char
3933         *geometry;
3934
3935       geometry=GetPageGeometry(option);
3936       flags=ParseAbsoluteGeometry(geometry,&image->tile_offset);
3937       geometry=DestroyString(geometry);
3938     }
3939   option=GetImageOption(image_info,"transparent-color");
3940   if (option != (const char *) NULL)
3941     (void) QueryColorCompliance(option,AllCompliance,&image->transparent_color,
3942       exception);
3943   option=GetImageOption(image_info,"type");
3944   if (option != (const char *) NULL)
3945     image->type=(ImageType) ParseCommandOption(MagickTypeOptions,MagickFalse,
3946       option);
3947   option=GetImageOption(image_info,"units");
3948   units=image_info->units;
3949   if (option != (const char *) NULL)
3950     units=(ResolutionType) ParseCommandOption(MagickResolutionOptions,
3951       MagickFalse,option);
3952   if (units != UndefinedResolution)
3953     {
3954       if (image->units != units)
3955         switch (image->units)
3956         {
3957           case PixelsPerInchResolution:
3958           {
3959             if (units == PixelsPerCentimeterResolution)
3960               {
3961                 image->resolution.x/=2.54;
3962                 image->resolution.y/=2.54;
3963               }
3964             break;
3965           }
3966           case PixelsPerCentimeterResolution:
3967           {
3968             if (units == PixelsPerInchResolution)
3969               {
3970                 image->resolution.x=(double) ((size_t) (100.0*2.54*
3971                   image->resolution.x+0.5))/100.0;
3972                 image->resolution.y=(double) ((size_t) (100.0*2.54*
3973                   image->resolution.y+0.5))/100.0;
3974               }
3975             break;
3976           }
3977           default:
3978             break;
3979         }
3980       image->units=units;
3981     }
3982   option=GetImageOption(image_info,"virtual-pixel");
3983   if (option != (const char *) NULL)
3984     (void) SetImageVirtualPixelMethod(image,(VirtualPixelMethod)
3985       ParseCommandOption(MagickVirtualPixelOptions,MagickFalse,option),
3986       exception);
3987   option=GetImageOption(image_info,"white-point");
3988   if (option != (const char *) NULL)
3989     {
3990       flags=ParseGeometry(option,&geometry_info);
3991       image->chromaticity.white_point.x=geometry_info.rho;
3992       image->chromaticity.white_point.y=geometry_info.sigma;
3993       if ((flags & SigmaValue) == 0)
3994         image->chromaticity.white_point.y=image->chromaticity.white_point.x;
3995     }
3996   /*
3997     Pointer to allow the lookup of pre-image artifact will fallback to a global
3998     option setting/define.  This saves a lot of duplication of global options
3999     into per-image artifacts, while ensuring only specifically set per-image
4000     artifacts are preserved when parenthesis ends.
4001   */
4002   if (image->image_info != (ImageInfo *) NULL)
4003     image->image_info=DestroyImageInfo(image->image_info);
4004   image->image_info=CloneImageInfo(image_info);
4005   return(MagickTrue);
4006 }